Running a doggy holiday spa is a great idea.
I already engage in much loved activities such as river walks anyway.
I speak 'dog' fluently
I appreciate help in the garden and am very admiring of a well dug hole. Luckily we are at the "major destruction" part of the gardening cycle, where there is much ripping out and cutting back to be done.
Some clients do find it all a bit full on though. I am hoping to take care of another friends dog soon. It fills the house with happiness (and a bit of dog hair).