16) Which mammal is most closely related to humans?
a) Monkey
b) Lion
c) Gorilla
d) Chimpanzee
Answer: d) Chimpanzee
17) Which mammal is known for its ability to change the color of its fur?
a) Chameleon
b) Tiger
c) Zebra
d) Polar bear
Answer: a) Chameleon
18) Which mammal is the slowest moving?
a) Cheetah
b) Sloth
c) Gazelle
d) Jaguar
Answer: b) Sloth
19) What is the largest mammal that lives exclusively in the ocean?
a) Dolphin
b) Seal
c) Walrus
d) Polar bear
Answer: c) Walrus
20) Which mammal has the largest ears relative to its body size?
a) Elephant
b) Mouse
c) Bat
d) Rabbit
Answer: a) Elephant