Lapping it up

Two cats live in our apartment block,
One black, the other grey,
I caught the latter at eight o’clock,
As I passed the pool one day.

It was crouched o’er the poolside and straining,
To drink from the water therein.
Arse in the air, with head craning
As though it were tonic and gin.

I didn’t do what I was thinking,
And give him a boot in the seat,
But when he had finished his drinking,
The water was down several feet.