Here are some toys that have lasted us several years (with a med. sized terrior and a miniature (middle size) poodle)
Kong:
This has lasted really well for me- but you have to get the correct size, we went through 3 before we found the right one.
My dog loves his, especially when I leave for work, I put peanut butter, carrots, doggie treats, peanuts... really anything inside and he has to get it out!
This is great too, its a fleece-like material on the outside so it holds their smell really well (the kind of toy that is a favorit is one that smells nice)
and these toys have sound! (we have the frog)
But that's about it for toys. I think they didn't tear up the animals b/c they talked and they took one apart and I had to buy another and they didnt' tear the second one apart.
I can recommend some good "chewies" that we've come accross as well.