Pet toy question

[SithSolo1]

Has anyone ever come across a dog/small pet toy that is similar to a hacky sack but stronger/made of a sturdier material so they can't chew through it? My two yorkies love hacky sacks but I'm afraid they are gonna naw through them sooner or latter.

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[MikeyIs4Dcats]

our cat loves to play with hacky sacks. I've never seen anything like you describe though. Our yorkie loves a toy mouse that has a squeaking microchip....she flings it all over the house.