Do the lower animals have baby teeth which are replaced by adult teeth as they mature?

Human children have a set of baby teeth which start to fall out by the time they are about six. They are replaced by adult teeth which last them almost till the end of their life . Does this apply to other mammals, reptiles (like crocs), fish etc.

Do the lower animals have baby teeth which are replaced by adult teeth as they mature?
Crocs have somewhere around 10 sets of teeth that come up as needed when another tooth falls out or gets knocked out





Dogs loose their baby teeth around 4 months old and have one set of adult teeth





Shark's teeth come in one row at a time and that new row is on the outer part of the jaw with each older row going in making up many rows of teeth. the number of rows depends on age of shark and breed.





Whales don't have teeth, but have plates. Think of it more like a callous. So that's easy to replace as needed because the tissue just has to harden.
Reply:I watch a lot of discovery channel! Someone else mentioned that elephants die after losing their last set of teeth is correct. Isn't that crazy? Report It

Reply:mammals do. /some whales do have teeth....ie. sperm, killer, beluga baleen whales have strainer things of a hornlike material.
Reply:yes, it applies to mammals. elephants, for example, have six sets of teeth (compared to our two). after they have worn out all six, elephants actually starve to death.





am not so sure about fish. sharks have a neverending supply of teeth...they lose their teeth quite frequently.



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