Compared to feral dogs, quite wealthy indeed. They've claimed sleeping and feeding spots that are very valuable for being both safe and climate controlled, and have a number of chew bones and toys that are free of dangerous splintering wood, animal bone, parasites and fleas. These are things that are valuable enough to fight over and will contribute greatly to their lifespan.

If you think the only measure of wealth is money, you have it backwards- money is a polite fiction representing an abstraction of value, and is only good for use as an exchange into another more concrete form of value.