Geez

But Gardner found there was no solid legal way to entrust money to a pet.

You don’t say! Know why? They’re animals. They have no need of money. They don’t have opposable thumbs to hold the money. Or to go to pets.com to buy that fabulous new sweater they’ve been dying to get. Try giving the money to a human being. If you can’t think of one to give it to, let me know, I can think of a few.