Why does cat hair not keep growing?

Cat hair does keep growing, just like human hair. It's just that the growth cycle is different for cats, and they shed their hair regularly.

Here's the breakdown:

* Hair Growth Phases: Just like human hair, cat hair goes through growth phases:

* Anagen: The active growth phase

* Catagen: A transition phase where growth slows down

* Telogen: The resting phase, where the hair detaches from the follicle and eventually sheds

* Shedding Cycles: Cats have a natural shedding cycle influenced by factors like season, diet, and hormones. This cycle determines when hairs enter the telogen phase and fall out.

* Regular Shedding: While cat hair doesn't grow continuously like some animals, it's constantly being replaced through the shedding cycle. This ensures a healthy coat.

* Appearance of "Not Growing": The continuous cycle of growth and shedding might make it seem like the hair isn't growing, but it's simply being replaced at a steady rate.

So, while cat hair doesn't grow infinitely, it does grow continuously, and its growth is regulated by the shedding cycle.