Good question, and maybe a tad young at that. All I know is I didn't start with Alfie untill she was about 4 -5 months, and I think I left it too late. She is very reluctant now with baths. We got her at 12 weeks, and, being a first time grey owner, I decided to let her settle in before introducing the stress of water, but I wish now I'd started gently, sooner.