I used to buy Tim something like the product in your first link. He loved them for a while, but then lost interest so I stopped buying them. I will say however that I think these types of products make them thirsty. I didn't lick the bone to see if it was salty
but perhaps the flavoring does something. Just make sure they are from the US. Tim's latest thing is a tripe stick, I can send you a picture of the packaging if you want. Also, if you have a dehydrator, or even an oven, you can try to make chicken jerky like my daughter did today for the pups, they LOVE them.