Mammals are in every country in the world.
Not usually.
Are usually placental mammals
Usually Legs
Usually hair or fur keeps mammals warm.
Herons usually don't eat small mammals, really. They prefer fish and insects over mammals.
small, usually rat-like creatures in the prehistoric age
they are the fist mammals to get to south America
usually small insects
The legs of insects and the legs of mammals are usually jointed. This does not take into consideration, though, that sharks, whales, and dolphins are also mammals.
Mammals get around by walking, swimming or flying. Most mammals walk to get around, except for bats (which usually fly), and seals, whales, and dolphins, which swim.
No, it's an insect which usually feeds on mammals
Generally, mammals and reptiles are both vertebrates, meaning they have a backbone and endoskeleton. Reptiles and mammals also have their brains located inside a cranium and have two eyes.