Animals with endoskeletons include many plant species, birds and humans. The global animal kingdom includes species with external skeletons, called exoskeletons, and organisms with internal skeletons, called endoskeleton... More »

Advantages of an endoskeleton include strong weight-bearing properties and even growth, while disadvantages include less protection and leverage for muscles. Endoskeletons are generally found in larger animals due to bet... More »

An endoskeleton is the skeletal structure possessed by all human beings and by many animals; it is composed of a support scaffold made of mineralized tissue forming either bone or cartilage. All vertebrates possess these... More »

Animals that lay eggs are known as oviparous animals and include fish, birds, reptiles and insects. These types of animals have little to no other development within the mother. Mammals that lay eggs instead of giving bi... More »

Animals that eat both plants and other animals, called omnivores, occur in every major animal lineage, including insects, fish, reptiles, mammals and birds. By contrast, some lineages, such as spiders, are completely dev... More »

Animals that estivate include snails, crocodiles, hedgehogs, tortoises, birds and lungfish. Estivation is the process by which animals enter a state of dormancy during hot times of year to conserve energy. In order to es... More »

Some examples of diurnal animals are humans, birds, pet dogs and cats, squirrels, elephants, gorillas, hawks, butterflies and honeybees. All of these animals are considered diurnal because they are mainly active during t... More »