I just like to ask how do i report dog abuse cases ? What kind of evidence that you need.

I just came home from dinner with my relatives. When i was walking into the house, i heard a dog cry. When i peep into my neighbour's house , i saw their dogs are fighting among themselves and one of them had hold the other one on the neck with it's jaw. I was worried and went to my neighbour's house and call them out but none of them even bother to come out . They just sit there and gamble.I keep on shouting and press their door bell but none even bother to come out. Then i peep again and the dog was already dead. Bugger i was damn furious wanted to throw stones into their house just to get their attention to come out and see what has happen. Want to have dogs as a pet please la , take care of them. Tomorrow morning sure screw them kao kao.