Although not every species in existence has been specifically studied for sleep patterns, scientists generally agree that all organisms need to sleep in some fashion. Sleep patterns differ from species to species, though, making a definitive answer next to impossible.
Human beings, for example, generally sleep for hours at a time, while other species, like the giraffe, only sleep for about 30 minutes per day. Brown bats, on the other hand, can sleep for up to 20 hours per day. Some animals can alter their sleep patterns when necessary, while others practice unihemispheric sleep, a process that allows one half of the animal's brain to sleep while the other half remains alert.Learn More
An animal that hunts other animals for food is called a carnivore or predator. These animals must kill other smaller animals to feed. Since carnivores must hunt to survive, they use large amounts of energy to obtain their food, and thus they require many calories to stay healthy.Full Answer >
The peregrine falcon, or Falco peregrinus, is the fastest bird and the fastest member of the animal kingdom. When swooping or diving, it reaches speeds of up to 200 miles per hour. It is native to North America and historically known as the duck hawk.Full Answer >
Though scientists argue about the details of how evolution occurs and the types of evolution, they almost universally agree that evolution is true. The fossil record, homologies and scientific experiments confirm that evolution can and does exist.Full Answer >
Rhinoceros vipers, which are known to scientists as Bitis nasicornis, are sedentary pit vipers that hail from the forests of central Africa. These snakes are primarily associated with forest pools and low-lying areas that are subject to frequent floods. Rhinoceros vipers are “true vipers” that lack the facial pits common to the pit vipers of North America and Asia.Full Answer >