Indestructible dog tennis balls?

[Henners]

Evening all,

We got bored of our hound destroying normal tennis balls in a couple of days, so came across some solid (what seem to be) cork ones:



However, that's the final surviving one and I can't remember where I bought them from!

So... Anyone had similar? or know of some balls which are pretty resistant? He manages to split hollow ones down the join


Thanks

[Dolf Stoppard]

Go for the Chuck-it balls off Amazon. But the rubber ones as opposed to their own tennis ball type ones. Incredibly tough and don't soak up water and become disgusting like tennis balls do. They also bounce really high! About four quid each but well worth it.