Narrator: Tails are like opinions ... a huge advantage Because unlike four-legged animals, which have to pour energy into every step they take, two legs take advantage of gravity, which ...

Its head and body are less than two and a half inches long, though its tail is a bit more than twice ... in female-dominated groups of up to 15 animals. They spend most of their time in trees ...

They cover their long tails with smelly secretions and wave them in the air to determine which animal is more powerful. Ring-tailed lemurs live in groups known as troops. These groups may include ...