A period when the young cat is growing rapidly and is usually not quite sexually mature
During this time the cat reaches full size and learns about life and how to survive it.
The cat is mature physically and behaviourally, and is still usually healthy and active, looking sleek and shiny and making the best of life.
The cat is what we call 'Mature', equivalent to humans in their mid-40s to mid-50s.
Takes the cat up to the equivalent of about 70 human years.
Many cats do reach this stage, some not showing any signs of being geriatric at all!