Unless they're jumping around in puddles and dirt, French Bulldogs tend to be clean. Their short, fine fur won't mat so brushing is generally quick and easy.
They're actually not overly energetic and will be perfectly happy exercising in a garden or being taken for a brisk walk. Speed in short bursts is more their thing
Only requiring a weekly brush of their short, smooth coat (and sometimes not even that), you'll find Manchester Terriers are very easy to groom.
If you're after a breed that will fit into your lifestyle, then a Basset Hound is going to be ideal. They don't mind taking time out for themselves.
Whippets and Greyhounds are often mistaken as being one and the same. They're not. Whippets are smaller and less muscular although there are great similarities, among them their tendency to be low maintenance.
They will shed but grooming is nevertheless minimal – regular brushing, baths every three weeks or so – so long as you clean their eyes and wrinkles each day
Some people may think Bullmastiffs look scary and that they may well be high maintenance dogs. But that couldn't be further from the truth.