Clutch size in birds and reptiles has long been studied by biologists, who have found generally that species that are short-lived or have a low survival rate among their offspring tend to lay more eggs at one time to increase the chances of having surviving offspring.

Why do some animals lay so many eggs?

Answer: It is because their most of the eggs are eaten by some other animal so they lay alrge no. of eggs at a time.

What animal lays a lot of eggs?

A tailess tenrec (Tenrec ecaudatus) in Madagascar. Insects are no slouches when it comes to reproduction and the African driver ant, which can produce 3 to 4 million eggs every 25 days, is thought to be the most generous of all.