The only part I found funny was the pouch full of groceries because it’s too absurd to be real. I used something called a Gentle Leader on my dog once, it was supposed to be better then leading a dog by a leash on the neck. The way it fit, it restricted his ability to open his mouth, and made him very defensive since his main line of defense was hobbled. It turned into fear based aggression with other dogs on walks. We got rid of it after about a month. The only time I think an animal should be muzzled is if it’s a threat to itself or others (vets often do a wrap muzzle for shots and the like) If you need to keep you pet muzzled around everyone, you shouldn’t be taking it to the store.
I don’t know much about Kangaroos. Do they bite? Wouldn’t their legs be their main line of defense? So chaining them together seems like a bad idea to me. I know they kick, and I doubt they do it with both legs at the same time.