What age does my dog need to be in order to use Miracle Vet? Matthew Kinneman November 12, 2018 19:26 Updated Follow Miracle Vet is safe for all breeds of dogs ages 4 weeks and older. It's also safe for cats ages 4 weeks and older. Related articles How do I use Miracle Vet? Is Miracle Vet safe? How much weight will my dog gain when using Miracle Vet? What are the ingredients in Miracle Vet? Why choose Bully Max dog food? Comments 0 comments Please sign in to leave a comment.