"flexible, wide at base, tapering, equal to body length"
David Mare is checking the tail length and fullness.
At home, you should stand the cat either on the hind legs and hold the cat up making the cat stand on
the hind legs with one or just have the cat stand all four legs and gently bring the tail forward to the back of the
head. The tip of the tail should reach to the base of the neck at the shoulders.
Below is Vickie Nye feeling the tail bone. "lack of cartilage" in the tail is a disqualifier. You should
also check for "tail faults". Feel the tail bone all the way to the tip. A genetic fault in the tail is a tail
bone that is not straight. You will feel a uneven or bumpy. You are feeling for the boning in the tail.