Question

Identify from the following group of animals which exhibit oestrus cycle

• A. Lion, deer, dog and cow
• B. Cow, monkey, elephant and ape
• C. Monkey, ape, man and elephant
• D. Lion, dog, monkey and ape

Answer 1

The correct option is A Lion, deer, dog and cow

Estrous cycle is a reproductive cycle of females of non-primate vertebrates. The gap between two estrus periods is known as estrous cycle. The females are highly receptive during estrus period. It is an indication of breeding period because one or more periods of estrus may occur during the breeding season of a species. Some animals like dogs are monoestrous as they have only one estrous phase in their breeding cycle. Males can recognize a female in heat by smell of pheromones. Lion, deer, dog and cow are non primates which exhibit estrus cycle.

So, the correct answer is option A.