I have Jack Russels pups to let go; one of which was abandoned by the mother at about 4 weeks of age the other 2 the mother stayed around until they were about 6 weeks old & never came back to us. Anyhow, they are all just now finally UTD, my eldest of the 3 is just now 3 months of age & received her first vaccs & deworm at 6-7 weeks when I first had her in, my Vet which is Dr Sandhu of Parma wanted her back in 4 weeks making her an obvious age of 11-12 weeks. She then was spayed & caught up on shots. Spay & Neutering can be done as early as 6 weeks as long as the animal is 4 lbs or more. text us directly at xxxxxxxxxx