Why Cat Size Does Not Change the Groom
Cats have no size index here. Outside the genuine outliers the practical difference between a nine pound cat and a fourteen pound one is close to nothing: the same table, the same equipment, the same appointment. What changes a cat groom is the coat and the temperament.
The one place weight does matter is indirect: a heavy cat cannot reach its own back, sides and base of tail, and the areas it stops reaching are exactly the ones that mat. That is a coat problem with a weight cause, and it is covered on the silky coat and double coat pages.