I know certain command words from past experience, such leave it, stay, sit, take it, or I can learn the commands that you tell your pet when needed. Most if not all dogs love me. If the dog has lots of energy I don’t mind taking them to the park or going on my skateboard and have them pull me to lose their energy for they can calm down. With big or medium dogs I know how they can act since they like to play a lot. I know boxer who likes too and he very energetic and it always fun taking him out to lose that energy to sit down and relax with their owners or other dogs. Thank you for your time and hope to see you soon!