31) Which mammal is known for its ability to use tools?
a) Monkey
b) Dolphin
c) Elephant
d) Otter
Answer: d) Otter
32) Which mammal is known for its ability to echolocate?
a) Human
b) Bat
c) Cat
d) Monkey
Answer: b) Bat
33) What is the smallest primate in the world?
a) Lemur
b) Monkey
c) Tarsier
d) Gorilla
Answer: c) Tarsier
34) Which mammal has the most complex social structure?
a) Lion
b) Gorilla
c) Elephant
d) Tiger
Answer: c) Elephant
35) Which mammal has the longest gestation period?
a) Dog
b) Horse
c) Giraffe
d) Elephant
Answer: d) Elephant