At what age do they......

[catfamily]

As they get older I notice many face changes.Width mostly.I believe they keep growing a tiny bit for a few years
And I notice the difference in her pictures.

[lv4dogs]

I have heard that it varies by breed, some grow slower than others. But in general I have heard 2-3 years of age.

Tiki is about 10 months or so & still growing.

[RedHedd]

I have heard that it varies by breed, some grow slower than others. But in general I have heard 2-3 years of age.

That's what I've heard, with Maine Coons taking the longest to reach their full growth. I swear, Mishi has grown since I adopted him; now he finally seems to have reached his full physical size; as for his mental maturity I love my giant kitten!