All animals have their own language and means of communication. Just because we don't understand it doesn't mean they aren't talking.
However if you are referring to our human languages then I would say a human. Humans are in fact a species of animals, and to be more exact, mammals.
There are also some animals that can mimic our languages, though they are not actually speaking it, for they cannot hold a valid conversation. Some of these animals include different birds, like parrots.
Mammal. It has the four things that make it a mammal. Has hair, has a backbone, is warm blooded, and offspring are born alive. If an animal doesn't have these 4 things they are not a mammal.
depends on the mammal, different mammals do different things
All living things have cells.
No, the things I speak about are not present in the current context.
You can't
You can speak Spanish.
Humans. We don't have wings, but we build airplanes and helicopters.
Yes, that is one of the things that makes them a mammal.
Yes, that is one of the things that makes them a mammal.
No, only some living things are mammals.
First you have to learn how to build things out of wood than you can build any things out of wood by yourself.
The Romans had used things to build