For years scientists have been researching and testing animal intelligence. They have come to various conclusions based on their findings. Just because an animal can’t read or speak does not mean that it cannot think.
Sheep, for instance, have very good memories and they have shown to display emotions by portraying different facial expressions, while rats are highly sociable and bond easily with their human guardians. Elephants can actually distinguish the difference between human gender, age and ethnicity just by the sound of someone’s voice.
Some of these animals’ brains are larger than human brains. They are intelligent, have great memories and some have even shown the ability to use tools when needed to perform simple tasks.