If you want for treatment of your dog to something special, then the best practice to thank your best friend is to give them a birthday party. Extending really need to know your dog’s real birthday to give them a birthday. Just choose a date sometime soon in the future, preferably the date of your party.
You may never be fully comfortable leaving your pet completely off leash in an outside, non-enclosed venue, but you can leave a long, lightweight leash on your pet that way . easily catch if ne