The original question, Anglika, if you bother to check, was about molting, not moulting.
Tell me this is a British forum and I will butt out. I thought it was an English forum. And you do not hold an exclusive on the language.
Molting IS moulting. It's simply a variant spelling.
You said that "dogs don't molt" and you were wrong. Why are you giving Anglika a hard time when it is you who have not checked the facts?
Australian dogs definitely molt/moult, so it can't be a purely British phenomenon.