#16 Cows are the best friends, and they spend most of their time with their friends.
#17 Dolphins have names for each other.
#18 Ravens can poke fun at each other for fun. These creatures are very smart and even know how to play a trick on someone, and not only on another crow, but also on another representative of the animal world.
#19 In Japan, macaques know how to use vending machines. They can buy various goods using the selected coins.
#20 During a joke fight, the male puppies let the girls “win”. They do this to get to know each other better.