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Top 10 Blue-ringed Octopus
The blue-ringed octopuses (genus Hapalochlaena) are three (or perhaps four) octopus species that live in tide pools in the Pacific Ocean, from Japan to Australia (mainly around southern New South Wales and South Australia[1]). They are currently recognized as one of the world's most venomous marine animals.[2] Despite their small size and relatively docile nature, they can prove a danger to humans. They can be recognized by their characteristic blue and black rings and yellowish skin. When the octopus is agitated, the brown patches darken dramatically, and iridescent blue rings or clumps of rings appear and pulsate within the maculae. Typically 50-60 blue rings cover the dorsal and lateral surfaces of the mantle. They hunt small crabs, hermit crabs, and shrimp, and may bite attackers, including humans, if provoked
A centipede bite is an injury resulting from the bite of centipede. Clinically, the wound is viewed as a cutaneous condition characterized by paired hemorrhagic marks that form a chevron shape caused by the large paired forcipules of the centipede Despite the forcipules also being known as toxicognaths or "poison claws", and capable of delivering venom, the majority of bites are relatively harmless to humans and present the greatest risk to children and those with those who develop allergic reactions
Top 8 Spider
If you want to be able to recognize scorpions when you come across them, here are pictures of some of the most common Arizona species. Often people tell men that they didn't know they were stung by a scorpion. It is important to recognize scorpion sting symptoms: immediate pain or burning, very little swelling, sensitivity to touch, and a numbness/tingling sensation.If you are stung by any scorpion, including the venomous Arizona Bark Scorpion, here are some immediate actions you should take:Wash the area of the scorpion sting with soap and water.Apply a cool compress on the area of the scorpion sting. Ice (wrapped in a washcloth or other suitable covering) may be applied to the sting location for 10 minutes. Remove compress for 10 minutes and repeat as necessary.If stung on a limb (arm or leg) elevate the limb to heart level.
Top 8 Spider
Spiders are active hunters and strongly rely on their bites to paralyze and kill their prey before consuming it. Since spiders are aware of the effect caused by their bites, they also widely bite on self-defense any intruder risking to damage individuals or their webs (i.e. bites are their naturally occurring defense mechanism). While many spiders will never attack animals larger than themselves, preferring to either run away or feign death, some share a rather aggressive behavior and will do so even if no real danger exists
Only a minority of spider species possess chelicera strong enough to penetrate human skin, however due to their strong surviving potential, they are those most frequently encountered in human habitats. About 98% of the bites inflicted by these species are harmless, but some symptoms can include necrotic wounds, systemic toxicity and, in some cases, death. Only some two hundred species in twenty genera(out of over 40,000 known species) are known to have serious, potentially lethal bites.In most cases of bites, the chief concern is the spider's venom, although in some cases medically non-significant spiders can transmit infectious diseases. Spiders regarded as dangerous possess venom that is toxic to humans, in quantities that can be delivered by a single bite. Only three spider families are known to be non-venomous, i.e. lacking venom glands or any proper way to deliver it. They areUloboridae, Holarchaeidae and Liphistiidae. These spiders, however, do possess fangs and can deliver sharp, unpleasant bites. In addition, the fangs of Liphistiidae can often inflict infections spread through the skin, mostly due to their large size, which in theory could represent more danger than the bite of a non-lethal venomous spider species.
Spider bites may be misdiagnosed by both the general public and medical practitioners. Many other conditions both infectious and non-infectious can be confused with spider bites.Many of these conditions are far more common and more likely to be the source of necrotic wounds.
Top 7 Scorpions
Scorpions don't bite, but scorpions sometimes sting. Unfortunately we have many types of scorpions in Arizona. If you remain calm, it is not difficult to treat a scorpion sting. Even if you are stung by the Arizona bark scorpion -- the most dangerous and venomous of the Arizona scorpions -- it is not likely to be fatal or even to have long-lasting effects. Local medical centers are familiar with the treatment.
If you want to be able to recognize scorpions when you come across them, here are pictures of some of the most common Arizona species. Often people tell men that they didn't know they were stung by a scorpion. It is important to recognize scorpion sting symptoms: immediate pain or burning, very little swelling, sensitivity to touch, and a numbness/tingling sensation.If you are stung by any scorpion, including the venomous Arizona Bark Scorpion, here are some immediate actions you should take:Wash the area of the scorpion sting with soap and water.Apply a cool compress on the area of the scorpion sting. Ice (wrapped in a washcloth or other suitable covering) may be applied to the sting location for 10 minutes. Remove compress for 10 minutes and repeat as necessary.If stung on a limb (arm or leg) elevate the limb to heart level.
Top 6 Sharks
A shark attack is an attack on a human by a shark. Every year around 60 shark attacks are reported worldwide, although death is quite unusual. Despite the relative rarity of shark attacks, the fear of sharks is a common phenomenon, having been fueled by the occasional instances of serial attacks, such as the Jersey Shore shark attacks of 1916, and by horror fiction and films, such as the Jaws series. Almost all shark experts feel that the danger presented by sharks has been exaggerated, and even the creator of the Jaws phenomenon, the latePeter Benchley, attempted to dispel the myth of sharks being man-eating monsters in the years before his death.
Top 5 Crocodile
A crocodile is any species belonging to the family Crocodylidae (sometimes classified instead as the subfamily Crocodylinae). The term can also be used more loosely to include all extant members of the order Crocodilia: i.e. the true crocodiles, the alligators and caimans (familyAlligatoridae) and the gharials (family Gavialidae), as well as the Crocodylomorpha which includes prehistoric crocodile relatives and ancestors.
Member species of the family Crocodylidae are large aquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodiles tend to congregate in freshwater habitats like rivers, lakes, wetlands and sometimes in brackish water. They feed mostly onvertebrates like fish, reptiles, and mammals, sometimes on invertebrates like molluscs and crustaceans, depending on species. They first appeared during the Eocene epoch, about 55 million years ago.
Top 4 Snakes
A snakebite is an injury caused by a bite from a snake, often resulting in puncture wounds inflicted by the animal's fangs and sometimes resulting in envenomation. Although the majority of snake species are non-venomous and typically kill their prey with constriction rather thanvenom, venomous snakes can be found on every continent except Antarctica.Snakes often bite their prey as a method of hunting, but also for defensive purposes against predators. Since the physical appearance of snakes may differ, there is often no practical way to identify a species and professional medical attention should be sought.
The outcome of snake bites depends on numerous factors, including the species of snake, the area of the body bitten, the amount of venom injected, and the health conditions of the victim. Feelings of terror and panic are common after a snakebite and can produce a characteristic set of symptoms mediated by the autonomic nervous system, such as a racing heart and nausea.Bites from non-venomous snakes can also cause injury, often due to lacerations caused by the snake's teeth, or from a resulting infection. A bite may also trigger an anaphylacticreaction, which is potentially fatal. First aid recommendations for bites depend on the snakes inhabiting the region, as effective treatments for bites inflicted by some species can be ineffective for others.
The number of fatalities attributed to snake bites varies greatly by geographical area. Although deaths are relatively rare in Australia, Europeand North America,the morbidity and mortality associated with snake bites is a serious public health problem in many regions of the world, particularly in rural areas lacking medical facilities. Further, while South Asia, Southeast Asia, and sub-Saharan Africa report the highest number of bites, there is also a high incidence in the Neotropics and other equatorial and subtropical regions.Each year tens of thousands of people die from snake bites, yet the risk of being bitten can be lowered with preventive measures, such as wearing protective footwear and avoiding areas known to be inhabited by dangerous snakes.
Top 3 Jellyfish
Jellyfish (also known as jellies or sea jellies or Medusozoa) are free-swimming members of the phylum Cnidaria. Jellyfish have several different morphologies that represent several different cnidarian classes including the Scyphozoa (over 200 species), Staurozoa (about 50 species), Cubozoa (about 20 species), and Hydrozoa (about 1000–1500 species that make jellyfish and many more that do not).Medusais another word for jellyfish, and refers to any free-swimming jellyfish stages in the phylum Cnidaria.
Jellyfish are found in every ocean, from the surface to the deep sea. Some hydrozoan jellyfish, or hydromedusae, are also found in fresh water; freshwater species are less than an inch (25 mm) in diameter, are colorless and do not sting. These are the large, often colorful, jellyfish that are common in coastal zones worldwide. Scientists have evidence of Jellyfish roaming the seas for about 500 million years.
In its broadest sense, the term jellyfish also generally refers to members of the phylum Ctenophora. Although not closely related to cnidarian jellyfish, ctenophores are also free-swimming planktonic carnivores, are generally transparent or translucent, and exist in shallow to deep portions of all the world's oceans.
Alternative names for groups of jellyfish are scyphomedusae, stauromedusae, cubomedusae, and hydromedusae. These may relate to an entire order or class.
Top 2 Dogs
Facts
Rabies is one of the most well known of all the viruses. Fortunately, through active vaccination and eradication programs, there were only 3 reported cases of human rabies in the United States in 2006, although 45,000 people were exposed and required post-exposure vaccination and antibody injections. In other parts of the world, however, human cases and deaths from rabies are much higher. Around the world 1 person dies from rabies every 10 minutes.
Symptoms
After coming in contact with the virus, the bitten animal may go through one or all of several stages. With most animals, the virus will spread through the nerves of the bitten animal towards the brain. The virus is relatively slow moving and the average time of incubation from exposure to brain involvement is between 3 to 8 weeks in dogs, 2 to 6 weeks in cats, and 3 to 6 weeks in people. However, incubation periods as long as 6 months in dogs and 12 months in people have been reported. After the virus reaches the brain it then will move to the salivary glands where it can be spread through a bite. After the virus reaches the brain the animal will show one, two, or all of the three different phases.
Top 1 Mosquitoes
Mosquito (from the Spanish and Portuguese word for little fly) is a common insect in the family Culicidae (from the Latin culexmeaning midge or gnat).Mosquitoes resemble crane flies (family Tipulidae) and chironomid flies (family Chironomidae), with which they are sometimes confused by the casual observer.
Mosquitoes go through four stages in their life-cycle: egg, larva, pupa, and adult or imago. Adult females lay their eggs in standing water, which can be a salt-marsh, a lake, a puddle, a natural reservoir on a plant, or an artificial water container such as a plastic bucket. The first three stages are aquatic and last 5–14 days, depending on the species and the ambient temperature; eggs hatch to become larvae, then pupae. The adult mosquito emerges from the pupa as it floats at the water surface. Adults live for 4–8 weeks.
Mosquitoes have mouthparts that are adapted for piercing the skin of plants and animals. While males typically feed on nectar and plant juices, the female needs to obtain nutrients from a "blood meal" before she can produce eggs.
There are about 3,500 species of mosquitoes found throughout the world. In some species of mosquito, the females feed on humans, and are therefore vectors for a number of infectious diseases affecting millions of people per year. Some scientists believe that eradicatingmosquitoes would not have serious consequences for any ecosystems.www.chris.com
