I've been reading a lot of posts about what pet treats to feed our corgis, and I know a lot of them are unhealthy and unsafe, as well as expensive. I know our vet suggested carrot sticks and frozen peas (which Flash won't even touch), as well as peanut butter (which he loves but is fattening). Is there anything else that anyone knows of that is DEFINITELY safe for corgis, as well as nutritious? Thanks!