Finnegan is a puppy-mill rescue that I have had for about 7 years, he is about 8 years old. He lives with our other tescue, Cooper, also posted here. They need to be kept together, please. He is very swwet and submissive to me, but aggressive to other people until he gets to know them. He is aggressive to other dogs until he gets to know them very well. He has a cough. He is relatively housebroken, but does mark territory in the house. I cannot bring him to my mother's home where I am relocating to care for her. Please help. Finnegan has a 'brother' who he lives with now, another dachshund, but he would do fine on his own.