Mine is a lab/dane mix, and he is a true garbage gut. Amazingly he's never needed surgery ... but he's helped eat (he and his littermate) two sofas, a loveseat, the spindles on the deck rail, batteries (that was fun), permanent markers, occasional socks, eggrolls lying on the counter BEFORE a 150 mile trip home, cat food, cat litter, half of an Italian love cake ... followed by a peroxide chaser, denuded an entire row of grape tomato plants (that was a fun three days), paper, pencils, and every mole/vole he can catch.