I agree with going for a return, a foster, or a brood. A four year old off the track may need to be potty trained, learn stairs, learn about elevators and glass lobby doors. As Susan said, the dog you get may not be the dog you expect. Work with your group. Let them know all your concerns, and bring up any additional issues you find here. I take in returns, and seniors needing a home. I've had thirteen Greyhounds, and have taken in two at a time a few times. They are sooo easy. My four year old from the track still won't walk outside my driveway after being here a year. She is afraid of everything out in the world. Not a problem for me. I live in the woods with no neighbors, have a doggie door, fenced yard, and four other dogs to keep her company. She is sweet, and loves people, but she would not work for you at sll. You would both be miserable. She was in a foster home for a few days, and they found that she loves people and is fine with other dogs. The rest of the stuff I found out after she came here. Don't be swayed by cute pictures, or descriptions provided by the kennel staff. That dog may not be the same in a noisy city with no other dog in the house. You said you applied to several groups. Come of them probably fosters. Please ask about that. Good luck!