Vertebrate groups with amniotic eggs include reptiles, birds and mammals that lay eggs. In addition, the placenta of placental mammals is a modified version of the membranes within amniotic eggs. Animals in these groups ... More »

The amniotic egg allows reptiles, birds and mammals to lay eggs on land without drying out. The fluid-filled cavity containing the embryo is separated from the external environment by an amniotic sac that is impermeable ... 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 »

The amniotic egg allows reptiles, birds and mammals to lay eggs on land without drying out. The fluid-filled cavity containing the embryo is separated from the external environment by an amniotic sac that is impermeable ... 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 »

The temperate forest is home to many different animals including several species of mammals, insects, birds, amphibians and reptiles. Skyenimals, a web source, gives a full list of the animals found in this habitat. More »

The vast majority of animals with ocular media, including fish, amphibians, insects and other invertebrates, reptiles, birds and some mammals are capable of seeing ultraviolet light. Goldfish, mantis shrimp, butterflies ... More »