Question

Anaerobic respiration also occur in animal cells suggest an occasion for this

Answer 1

Humans and other animals rely on aerobic respiration to stay alive, but can extend their cells' lives or performance in the absence of oxygen by using forms of ... in the presence of oxygen, but does not use it to grow; A facultative aerobe – an organism that can use oxygen to grow, but can also perform anaerobic respiration.

Answer 2

Yes. It's a true statement.
when our body cells are lack of oxygen, and they have to respire , they go through anaerobic respiration.

i.e - When athletics run so fast and after some time due to lack of oxygen they tend to respire anaerobic. And as a result of it muscles cramps occurs .