Some nocturnal animals lose certain 31. over time due to lack of necessity.

They have a varied 32. compared to their three-toed relatives because they face less competition at night.

Their flexible 33. allows them to scan their surroundings efficiently.

These sloths adjust their 34. depending on environmental conditions.

The presence of algae in their 35. helps them blend into their environment.

North Island brown kiwis adapted to a nocturnal lifestyle to escape 36. .

Their eyesight lacks the ability to perceive 37. but they have an excellent sense of smell.

The 38. laid by kiwis are unusually larger in proportion to their size.

Bats have specialized 39. skin for echolocation.

Bats rely on 40. to keep their claws secure while sleeping.