To sign squirrel, take both hands and extend the index and middle fingers, with the fingers bent like two big squirrel teeth. Bump the two hands together, like two squirrels kissing.
Babies love playing games with animals. Use the animal flash cards and make a game out of identifying each animal.
Use the squirrel sign together with other animal flash cards to teach your baby the animal signs.
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I use sign language in my storytimes at the Blount County Public Library.