The squid and the cuttlefish. Wikipedia has more information, and a link is provided.
The animal most closely related to humans is the chimpanzee.
Humans are most closely related to chimpanzees.
Chimpanzees are the animals most closely related to humans.
No animal most closely related is chimp
Humans are most closely related to chimpanzees in terms of evolutionary history.
Socially humans are more related to wolves, social carnivorous pack animals. Our DNA is most closely related to other primates.
hazlenut weevil
sea urchin
a cow
A cockatiel belongs to the bird family in the animal kingdom and is most closely related to cockatoos.
The animal that is the most emotionally complex besides the human is the monkey. Monkeys are very closely related to humans.
Manatee