People who leave large amounts of food in parks, gardens, back alleys etc might think it's helping the wild animals but it's really just supporting rat and pigeon problems. It's a big problem. Some people do it on a daily and an industrial scale .
Some rats are bigger than my (admittedly small) dog. They will eat through anything. I've spent days/hours making our charity spaces safe after rats got in, not just food sources but anything they could gnaw, like rolls of bin bags. So zero rat tolerance; no need help all the local wildlife. Just stop indiscrimate mass dispersal of food. Most of it is less than helpful to the wildlife that isn't a problem anyway, and just fills them up with junk food
By the way, here's my little 4Kg, 12 year old rescue Yorkie (with no teeth to defend himself) looking cute.