Does a dogs hair or cats hair continouosly grow like a humans. or does it only grow to a particualr length depending on the breed. And how does the fur know when to grow if its cut off...i know stupid question.
it depends on the breed english sheep dogs grow until it touches the floor but short hair breeds have hair like our eye lashes it grows until it gets to a point then falls out and re-grows. shaving a pet can cause problems with texture and may not grow in some spots at all. i have groomed for a long time and chows and goldens look different when there hair grows back. the coat turns to fuzz and the undercoat does not grow in correct. i hope this is what you were looking for.
All hair, even human, has a predesignated length it will grow to until it falls out. This is programmed by the DNA. Don't ask me how it knows how long it is, but it does. Ever wonder why your arm hair doesn't grow as long as your head?