Octopus
Sly octopuses are endowed with an impressive brain size. Regarding your body weight, of course. They have a phenomenal memory, they can easily distinguish the faces of people and shamelessly show sympathy for those who feed them.
Rats
The rat is the only creature in the animal kingdom that can laugh. Rats also have dreams. In order not to be in the clutches of a predator, they communicate with each other in the ultrasonic range. According to scientists, they have a rich vocabulary.
Elephants
Elephants have an excellent long-term memory, which is why they are terribly vindictive. They are well versed in the terrain. Know how to use tools. They use thick branches as “flywashers”. Elephants know how to empathize with their fellow tribesmen. And they get very upset when they feel bad or die.