out of those ,i'd have to say a border collie on my experience.the dolphin are used by the forces for their inteligence. but i don't think they would swim near a bomb if they knew what it could do.a chimp only slings $hit at you in a zoo.a parrot talks multi lingual but doesn't know what it's saying and a merrcat????
cool..lol....i had a border collie she died after 18years,,cool dog though,,,i also had a dolphin but there a sod to walk,,,,he died after 10 mins,,,,,
I'd take a guess at the animal with the biggest brain, which I'd take another guess at the Blue Whale.
Monkeys are quite intelligent to be slinging **** at people gawking at them in captivity. We humans would probably do similar if the roles were reversed.