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The physiology of underwater diving is the physiological adaptations to diving of air-breathing vertebrates that have returned to the ocean from terrestrial lineages. They are a diverse group that include sea snakes, sea turtles, the marine iguana, saltwater crocodiles, penguins, pinnipeds, cetaceans, sea otters, manatees and dugongs.
Despite natural infection of rabbits being rare, they are particularly vulnerable to the rabies virus; rabbits were used to develop the first rabies vaccine by Louis Pasteur in the 1880s, and continue to be used for rabies diagnostic testing. The virus is often contracted when attacked by other rabid animals and can incubate within a rabbit for ...
Three genetically distinct strains have been identified: dolphin morbillivirus (DMV), pilot whale morbillivirus (PWMV) and porpoise morbillivirus (PMV). [2] Symptoms of infection are often a severe combination of pneumonia , encephalitis and damage to the immune system, which greatly impair the cetacean's ability to swim and stay afloat unassisted.
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Some ecosystems can move inland with the high-water mark, but others are prevented from migrating due to natural or artificial barriers. This coastal narrowing, called coastal squeeze if human-made barriers are involved, can result in the loss of habitats such as mudflats and marshes .
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. The process is called parthenogenesis, from the Greek words for “virgin” and “birth.” It tends to occur in ...
Unprovoked attacks by sharks declined sharply in 2024, according to new figures from an international database compiled by the Florida Museum of Natural History.
Rabies is a viral disease that causes encephalitis in humans and other mammals. [1] It was historically referred to as hydrophobia ("fear of water") because its victims panic when offered liquids to drink.