1 - 6 weeks: Newborn. Eyes open at 2 weeks. Pups are walking by Week 3. Weaning starts at Week 4. Weaning ends by the beginning of Week 6.
8 - 12 weeks: The 'new' puppy phase. The world is their oyster! Everything is exciting but young pups also tire out easy, taking quite a few naps.
8 weeks to 1 year:
Puppy. This first year is one of quite a bit of growth.
4-7 months:
Puberty (females enter heat, males have viable sperm)
5 - 6 month mark: The 'puppy uglies' begins! A dramatic change-over from puppy coat to adult. The color of the Pom may change during this time. Coat may lighten or darken. Secondary colors may fade or come in stronger.
7-9 months:
Teething stage is winding down.
10 months:
A Pom is just about reaching his/her adult weight. The adult coat is just about in by now.
1 year old:
Adult; official an adult at this age (and the human equivalent of 15 year old teenage, the 1 year old Pomeranian has lots of energy.
While housebreaking is accomplished by now & the Pom understands many of the rules with more time awake & often having a strong need to be with his humans, separation anxiety
can be stronger than ever.
8 years old:
Senior. There is no official age that a dog of any breed becomes a senior. You vet will make a determination.
To pacify owners, many vets wait until the 9 or 10 year mark. However, it is important to have this declared so that a Pomeranian can start having twice-per-year health checks instead of once-per-year.