Also, some animals evolved differently than others, like us humans as compared to ants, which have only a couple of purposes. Even though animals don't think like Einstein did, they most definitely have feelings and thoughts. He cried just like we would have when his kitten died. USA Animals can think complex thoughts. They are even sometimes smarter than humans.
Dolphins can open gates just like humans can.
Elephants know that when they are hot they should take a mud bath or drink water to cool off. USA I believe most animals act on instinct unless they are trained to think. If you left an animal alone without any training, they would act on their natural instincts. USA I think animals understand sounds, not words. They remember one sound or motion, and every time the sound or motion occurs, the animal reacts to it.