From the Ty Beanie Babies collection.
Plush stuffed animal collectible toy. 
Mint with mint tags (with heart & tush tags). 
Approximate size: 8 inches. 
One of the Fox style TY Beanies. 

This is the white belly verion of sly. There is another variation with an all brown belly. 

Inside the tag reads: 
Sly is a fox and tricky is he
Please don't chase him, let him be
If you want him, just say when
He'll peek out from his den!

Birthday = 09/12/1996