Can you carry your dog onboard or enter a hotel in the US/UK/Europe? Please Register or Log in to view the hidden image!
https://www.cntraveler.com/story/flying-with-a-dog-everything-you-need-to-know Maybe so,then if that link is trustworthy. (I had no idea really- or care very much)
People were taking pets on planes as emotional support animals but I believe it is now limited to certified service dogs.