I traveled for a year with a dog and a cat on board We had no problems,The cat didn't go up top,The dog was a shih tzu in full coat she is totally paper trained never goes outside so she stayes pretty clean,and it also helps keep boat
clean not tracking
in dirt if she went out.There are times when ruising that a dg that isn't trained to g on the boat could be a problem,Sometimes when your at anchor
it's to dangerous to get off the boat,an it's not healty for the pet not to go ,also it;s not comfortable for it.By all means have a pet on board but please make sure it will go potty below the deck
if need be for it's safely.