Puppy Development
- ​Neonatal (newborn to 2 weeks)
- Birth weight will double
- Most of their activity will comprise of sleeping and eating
- Transitional (2-4 weeks)
- At this stage your pup will begin to open it’s eyes and learn to walk
- Juvenile (4-12 weeks)
- Puppies will begin to play and run, strengthening muscles
- Expect daily changes as the puppy begins to grow rapidly
- Adolescence (6-12 months)
- Will begin to enter sexual maturityÂ
- Physical growth will slow down
- Baby fur begins to be replaced by the adult coat
- Full Maturity (1-2 Years)
- Physical growth stops. Muscle can be gained over timeÂ
A common denominator used to be that your dog reached physical maturity at one year of age, but that’s simply not accurate! When your dog reaches physical maturity will vary greatly depending on the breed and size of dog. Generally, toy and small breeds will reach physical maturity at a younger age than their large or giant breed counterparts. Knowing your breed and talking with your breeder can help guide you in choosing age appropriate activities for your dog. The growth of a purebred puppy will also differ from the growth of a mixed breed puppy. Depending on the breed and size of the parents a mixed breed puppy may differ in growth stage.  ​
Growth Plates
At the end of long bones we can find bone surrounded by layers of soft developing cartilage – this is know as growth plates or epiphyseal plates. This area contains rapidly dividing cells that allow bones to become longer until they reach puberty but they are also the weakest areas of the growing skeleton and very vulnerable to injury! Once a growth plate is closed it becomes a stable and inactive part of the bone.
So what happens when an injury occurs?
- The growth of damaged cells may slow down and come to a halt, meaning one side may longer grow while the unaffected healthy side continues leading to potential deformities.Â
- A forearm injury such as the growth plate to the ulna could result in the continued growth of the radius bone and bowed legs.Â
Preventing Injury in our Puppies
- Moderation is key!Â
- No fat puppies! Obesity puts undue strain on developing bodies and has lifelong consequences!Â
- Avoid high impact exercise
- Know your breed – large breeds need special consideration!
- Delay spaying and neuteringÂ
- More and more research shows that hormones play a key role in closure of growth plates. Dogs altered early are deprived of these hormones and delay the closure of plates which could lead to a greater risk of developing hip dysplasia and cruciate injuries.Â
- Follow exercise guidelines
- No forced exercise, endurance or aerobic activities (i.e. running, jogging, hiking)
- Agility Training /Examples
- Low impact ground training
- Recalls
- RetrievingÂ
- Handling cues (e.g. shadow handling, front/blind/rear crosses)
- Nose targeting behavioursÂ
- Start line waits
- Lowered obstacles (e.g. contact equipment)
- Low jumps (no higher than carpal height)
- TunnelsÂ
- Body awareness exercises (e.g. wobble board, instability equipment)
Age Appropriate Exercise and Early ConditioningÂ
Conditioning the Agility Puppy
​Getting regular puppy assessments is also important and can help detect subtle differences and identify injuries sooner! These assessments also help you gather object data and ensure your dog is progressing their strength, balance, and body awareness at an appropriate rate.Â
While today’s blog has focused on the agility dog I want to stress that preventing injury in young dogs regardless of what sport they may one day compete in is crucial! We want what’s best for our dogs and the truth is that at the end of the day we want a happy and healthy partner who can spend many years with us doing what they love – whether that’s a sport or just hanging out by our side. Starting early with conditioning and preventing injury is key in helping us achieve that goal!Â