Welcome! I am Dr. Altman, a licensed veterinarian and I am happy to answer your questions.
I think this is a great question and glad you asked because often we can see injuries at this age due to overuse
At this point there is no clear cut answer to this question but using the ball launcher in moderation would be advised just as extended walks/ runs would be recommended to avoid as well
But unfortunately you have a very high energy breed (as I'm sure you have assessed at this point!) so some exercise is definitely recommended
Using the ball launcher in straight throws (not up in the air) for short periods of time is fine, let's say under 10 minutes
Walks/ runs less than a mile at a time as well
Again there is no written formula that has been researched but the first 12-18 months no over exertion is recommended and increasing activity as she ages slowly would be the best course of action
So by 6-8 months old doing 1-2 mile walks/ runs and by 1 year old increasing that to a 3-4 mile level
Please let me know if this information makes sense or if I can clarify anything for you today
I am going to be taking a short break but wanted to ensure you have no additional questions I can assist with?
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Thank you that explains the situation very well.
Great! Good luck to you and keeping Aster out of trouble :)