She is at least thirteen years old - she turned up on our terrace one night in 2000 with four kittens.
The OH, who professes to hate cats, approves of her because she was a very good mother, and because her eyes are pale blue like his.
They also shine red at night. No comment.
Because of her colouring and markings, and because her eyes reflect red rather than white or yellow like other cats, our vetinary friend says she has a lot of Burmese in her genes.
She got so excited about this that she had to do her somersault act, which involves putting the crown of her head on the ground and throwing the rest of her body backwards.
She used to be able to do this in the middle of the path, which she demonstrated every time we came home. This was quite spectacular and caused endless amusement to our neighbours, but now she needs the help of a wall.
Step one - head on the ground and flop sideways.
Step two - push off from the wall with all four legs and roll onto your back.
Step three - land on the other side and then sit up and try to look smug and dignified at the same time.