Yes, the problem with people feeding wild animal we have here, too. Especially with wild pigs that can become a danger. And other, like racoons, just steal what they want. As you say, from food bowls of dogs and cats, or from compost piles or bins. Well, if we invade their habitats, we don't need to be surprised about that.
Btw., this gopher, is that a kind of marmot? Because those vary enormously in weight over the year. Some quadruple it during the warm season, and lose equaly much during the winter. So it may be normal for them to look a bit round now.