The goblin shark is known for having the sharpest teeth.
Tiger
No. Kangaroos do not have the sharpest memory. They are not particularly intelligent; not are they very trainable.
Eagles have the sharpest eyesight of any animal.
I have the sharpest eyes in my classroom.
Squid and cuttlefish
fin whale
Humans chase any animal that an animal can't chase.
Blue Fin (tuna)
fish
Sharks🐬
I believe it is the fin whale.