Question

In which among the following set of animals, show oestrus cycle?

• A. Cow, sheep, rat, deer, dog, tiger
• B. Monkey, ape and man
• C. Cow, monkey, ape, man, dog
• D. Sheep, ape and man

Answer 1

The correct option is A

Cow, sheep, rat, deer, dog, tiger

The oestrous cycle is the main reproductive cycle of non-primate vertebrates. For example rats, mice, horses, pigs have this form of reproductive cycle. The primates like monkey, ape and man undergo the menstrual cycle. Menstrual bleeding in non-human primates is minimal.