Originally Posted by
Crista
Reading your post and I see obviously you are annoyed having to look after a dog that isn't yours. So it's a nuisance but try to be in the dog's position having to be removed from familiar surroundings. Dogs and cats can feel the tension in households. Your annoyance is not unnoticed by the dog, so of course it'll respond by calling out to his former owner for help. He doesn't feel safe and that's why it responded to your kids with bites. He's in fear mode. Being stuck in a cage is no fun to any living thing. It's not his safe sanctuary in that cage.
Try having the cage in a quiet place without loud disturbance from the kids, like a room that they don't go to. Play with the dog around that area. Realize dogs can actually be nice companions and maybe you can enjoy him too like your mom did. Walking the dog can help you begin a bond with him too. Have a regular routine with walking because dogs enjoy that too.
Maybe the dog can't have his mother back, your mom, but maybe you guys can become friends. It just takes patience and since you have kids, you can do it.