why do animals yawn?

Subject: why do animals yawn?

Date: Sun May 11 14:05:12 1997
Posted by Gaby Schechter
Email: No email entered.
Grade level: K-3
School: Berkeley Carroll
City: Brooklyn State/Province: N.Y.
Country: U.S.A
Area of science: Zoology
ID: 863377512.Zo

Message:

Re: why do animals yawn?

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