People who work in animal welfare probably have their heart shattered every day, especially when the animals are left not only abandoned but also suffering from horrible injuries.
One of such stories happened in Arkansas. Someone left a pup, who was later named Goulash, in such a horrible condition that at the moment the rescue team found him, almost all the dog’s fur was gone due to demodex mange, which turned his body into one big sore.
More info: Mac’s Mission