Tazwell was 8 years, Archie was 9. They are/were both by far the most rewarding adopted dogs I've ever had the pleasure of living with. Tazwell acted well-behaved, but had the energy of a puppy. Archie's just all around good!
Bojangles was about a year, and Todd was 12 weeks. Most adoptable dogs are around a year old, give or take 6 months. Unfortunately, that's also the most difficult time to handle a dog-- which is what landed most of them in the shelter/rescue in the first place.