Jack Russell Terrier Puppy is dramatically transformed into energetic adults from helpless newborns in just 18 months : Jack Russell weight chart kg. Understanding these stages of development helps you:
Provide age care
Stop the problems of behavior through proper socialization
Become ordinary versus recognized related to development
Make a unbreakable ribbon with Terry.
Fun facts: Jack Russell reaches 80% of his adult height from just 6 months old!
Newborn phase (0-2 weeks): Delicate Start
physical development
Weight: 4-8 grams at birth
Eyes/Ear: Seal closed
Mobility: Creep only front legs
Sleep: 22 hours/day
Caring check list
✔ ° C (29 ° C) maintain whaling temperature
✔ Daily weight (5-10% body weight should increase daily)
✔ For orphaned puppies: Feed puppy formulas every 2. Hour
Infection phase (2-4 weeks): awakening senses
Key Milestones
| Week | Development |
|---|---|
| 2 | Eyes open (blue-gray color) |
| 3 | Ears open, begins walking |
| 4 | Baby teeth emerge, starts play-fighting |
Jack Russell weight chart kg
Introduce rough surfaces (carpet, grass mats)
Provide soft chew toys for teething relief Jack Russell Terrier Puppy
Introduce gentle human handling
Socialization Period (3-12 Weeks): Critical Learning Window
Socialization Timeline
3-5 Weeks:
Learned bite inhibition from littermates, Jack Russell weight chart kg
Initial exposure to human voices, Jack Russell Terrier Puppy
6-8 Weeks:
Should encounter 10+ new people
Exposure to car rides, vet visits
9-12 Weeks:
Introduction to grooming tools
Exposure to city sounds (sirens, traffic jack russell terrier puppies)
Pro Tip: Puppy kindergarten classes need to start at 8-10 weeks!
Juvenile Stage (3-6 Months): The Chewing Phase
Teething Timeline
12-16 weeks: Incisors shed
4-5 months: Canines loosen
5-6 months: Premolars erupt
Chewing Solutions
Frozen rubber toys (Kong Puppy)
Edible chews (Whimzees, frozen carrots) Jack Russell Terrier Puppy
Furniture protection: Bitter apple spray
Training Foundations
Housebreaking: Take outside every 45 minutes
Basic commands: Sit, Stay, Come
Crate training: 2-3 hour increments
Adolescence (6-12 Months): The “Terrible Teens”
Behavior Changes
Tests boundaries (ignores familiar commands)
Increased prey drive (chases small animals)
Sexual maturity (marking, humping)
Management Strategies
✔ Regular reinforcement of training
✔ Increased exercise (60+ minutes daily)
✔ Spay/neuter consultation
