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Re: gnaw marks?



On Tue, 02 Sep 1997 07:16:31 -0700 Jonathon Woolf <jwoolf@erinet.com>
writes:
>Blue Rider wrote:
>> 
>> Tracy Ford wrote:
>> >
>> 
>> > >
>> >
>> > When I was up at Dinosaur Provincal Park, years ago, some one 
>brought
>> > up a bone with several small 'chew marks' on it. Clive (I think), 
>said
>> > it was gnaw marks of a small mammal. I don't know if anyone has 
>written
>> > this up
>> > or if it really was gnaw marks, but it sure looked like it.
>> >
>> > Tracy
>> 
>> I don't know about herbivores, but I do know for a fact that
>> porcupines,rabbits, mice, rats, and turtles will gnaw bones they
>> encounter.
>
>Porkys, rabbits, mice, and rats all have ever-growing incisors, don't
>they?  Conventional wisdom has it that rodents and rabbits chew on 
>lots
>of things they don't intend to eat just to keep their teeth worn down.

True.  But they also wear them down by chewing on plant materials,
breaking them down into chips and shreds for bedding, which they replace
regularly, for themselves and their many babies.  Plus they gnaw to dig
or fashion shelter in some way.

Judy Molnar
Education Associate, Virginia Living Museum
vlmed@juno.com
jamolnar@juno.com
All questions are valid; all answers are tentative.