Such a huge pack of dogs? Oh dear, it won't be long before the dog catchers/shooters come for them. Dogs behave differently when they are alone, but when they are in a pack, they can start behaving very differently and can be dangerous, according to gifted animal scientist Temple Grandin. It is going to catch the attention of someone soon who will definitely call in the town council.
Very often, large numbers of dogs get thrown out or left behind to fend for themselves when plantations/factories/warehouses move/close down. Being pack animals, very often groups join up to form larger packs.
Anyway, unless something is done fast, I think these dogs face a very sad and bleak future, especially the handicap 3-legged one ...