I'm a first time poster in this section and total dog novice so bear with me but need some advice..
My sis is staying with me for a few months and has a 9 month old shih Tzu. He was really placid and fine at first. I don't think she's trained him much but recently he's becoming more of a problem. I know it's probably just a case of needing training but I guess I'm after a little advice. He's not my dog so I'm limited in what I can do but I'm a sahm so spend a lot of time with him.
The main problem is the recent barking and snapping culminating in him biting me today. He only gets to this point when he takes a liking to a guest or toy and won't leave them alone and I try and remove him or them from the situation.
Tonight it was my mil who's scared of dogs. The dog kept jumping up on her and in trying to get him off he bit me. My sis is away and once she's back I'm going to tell her he needs training but in the meantime what's the best way to deal with him?
He's just had the snip which I had hoped would help with the random falling in love with strangers and their shoes but clearly not based on tonight.
I know trying to take him away from my mil enraged him and invaded his space but she was scared so I had to. Any advice on the best way to deal with it? When he barks or jumps or does something bad I try and say no firmly and sort of point towards his face so he knows it's directed at him. Is this completely wrong? Im trying to be consistent but unsure if I'm doing the right thing.
I have 2 young kids in the house so the snapping and biting is really scaring me.
Sorry for long post and thanks in advance. Hope I haven't said anything stupid (or worse offensive)..