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.
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.
Teething stage is winding down.
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.