The context of the following conversation is Austin was not a very well trained dog, so when Skylar asked for a kiss, Austin bit Skylar's lower lip pretty hard.:
Austin says Austin bit Skylar on the lower lip, when she asked for a kiss..
The friend responds You need to get rid of that dog. If he bit once, he will do it again..
Austin responds We just need to give him more training..
The friend responds You need to find him a different home. He will bite her again. He has tasted blood..