Puppy Milestones Month By Month
1 MONTH
- Milk teeth are coming in
- Weaning can begin
1 ½ MONTHS
- Nipping, play fighting, chewing
- About 70% of adult brain mass is present
2 MONTHS
- Typical adoption time
- Begin housebreaking and integration with household (including children and other pets)
- Begin talking with your veterinarian about vaccinations and the benefits of spaying/neutering
- Puppy classes can begin at 6-8 weeks after a first vaccine
3 MONTHS
- Chasing animals, thrown objects, own tail
- Recognizes own name
- About 90% of adult brain mass is present
4 MONTHS
Responds to “come”
5 MONTHS
Approaching adult height and weight for small breeds (up to 20 lbs.)
6 MONTHS
- Fetching; toys remain important through adulthood
- Can respond to “heel,” “down,” “sit,” “fetch,” “stay”
- Sexual maturity for some small breed dogs
7 MONTHS
Milk teeth are lost; permanent teeth are in
8 MONTHS
- Puppy may be able to hold elimination for about 8 hours
9 MONTHS
Puppy training classes complete
12 MONTHS
Approaching adult height and weight for large breeds (more than 50 lbs.)
18 MONTHS
- Sexual maturity reached for some large breed dogs
- Approaching social maturity, adult behavior (all dogs)