I have a 5 month old tiny teacup male I just got a month ago and a tiny toy female that is 7 weeks old I got last week. I am training in a dog litter box. The male was doing fine until I got the female. He sees her have accidents, and he has started to have accidents. I keep them confined to the kitchen and living room where I have tile and wood floorl. I have started putting them in the pet taxi when they have an accident for about ten minutes. If they use the litter box I give a treat. The female is young I know and will take time, but she is able to climb in the box. She will use the box if I put her in it and has only got in the box one time by herself last night. Is the reason the male is having accidents because he sees the female have accidents or he just don't want to share the litter box? What should I do?