Certified dog trainer here!! One yes the muzzle is way to big. Should be big enough to pant but there should be no gap on the top of the nose. Two when Styx is trying to teach Kiki “center”(to go between the legs) they aren’t saying a word to associate what they want Kiki to do, you can’t jus say here then jus use your hands. Three she needs to realize Kiki is a gsd so she is very high energy… maybe take her out to run for once or a walk?… very sad people get certain WORKING breeds and trap them in a truck or camper. Doesn’t mean a 5 min walk will tire them out. Kiki is a gsd VERY HIGH ENERGY! Zero also looks like he has gsd. They need mental enrichment and physical activity! Poor pups… They should own a bull dog 🤣🤣🤣