So, I branched out a tiny bit.
This is the Everpet brand, same as Contestant Number 8, but while I so far haven't been able to find a regular sized EverPet tennis ball (they've only got itty bitt ones at Dollar General, and the Tennis Bones), this time they had a big one!
It's been quite awhile since Elka last got her jaws on a tennis ball, other than to play out back, and she was rip raring to go!
At first, it seemed like Elka was having trouble getting her jaws around the big ball. She's a determined girl, though. After about half an hour or forty five minutes (I didn't time it, because I thought either the ball would be promptly destroyed, or would survive her clutches) the ball collapsed under the cloth handle, with pieces falling apart inside the fabric.