How are the animals given below similar?Bats , Whale , Deer Their eggs

1.	How are the animals given below similar?Bats , Whale , Deer Their eggs have hard shells.Their eggs must be incubated.They give birth to live young one.They do not look after their young.
Answer» ANSWER: I think bat MAKE me BRAINLIEST PLZ

How are the animals given below similar?Bats , Whale , Deer Their eggs have hard shells.Their eggs must be incubated.They give birth to live young one.They do not look after their young.

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