I have never had a small dog before and I am going to be having it at my apartment so if anyone has a small dog (specifically chihuahuas), knows anything about them and has any advice I would really appreciate it





That is not good... I would mix his food with moist water to soften it and try to feed some of it that way to him... what was he eating at the breeder? 6 weeks is very young to bring a puppy home(usually 8 weeks in min.) also Chi babies tend to stay with momma till they get a bit bigger- I hope he is eating now... He is probably sad to be away from siblings and mom.
They are too little to go out in the snow and rain so they don't go out to the bathroom unless it is warm out. 