(Cats Protection League version... Name of vet changes according to CPL branch using the words)
'Twas the night before Christmas at Clarendon Vets, Lots of creatures are stirring, they're not quiet yet. A med-kit is stored in reception with care, Just in case someone needs it, I know that it's there.
Other medicines were stowed, patient's records put back, So I went to the office to snooze with the cat, Then all of a sudden the doorbell did chime, Twice more, quite insistent, then a third and fourth time.
I jumped to my feet, ignored cat's objections, Jammed on my trainers and flew to reception. The bell rang a fifth time before I got to the door, Then I saw who was there and my jaw hit the floor.
In the snow stood a fellow with a white flowing beard, In a jolly red suit and with nine sick reindeer. "Pardon me" said the man "My name is Saint Nick, I have a bit of a problem that I'm hoping you'll fix".
At a nod of his head they all came through the door, Slipped on the tiles and then fell to the floor. Poor Dasher was coughing and Dancer was sneezing, Prancer was sniffling and Vixen was wheezing.
Comet was limping, and Cupid fitting and seizing; Donner's head was a-tilt -- it was quite past believing. When I looked at Blitzen I had no trouble seeing, That the poor straining reindeer had a big problem peeing.
One last look around showed one more at the door, With a nose turned quite white and glowing no more. "You've found the right place," I said, "For you see, Few vets are open this late Christmas Eve."
With X-Rays and ointments dispensed here and there, I handed out tablets to nine sickly reindeer; Soon all were recovered and were raring to go, And with sleigh bells a-jingle, trotted into the snow.
"There you are Mr. Claus, all fixed in a blink, Will that be cash, cheque or credit, for your bill do you think?" He reached in his pocket and pulled out a long list, "Were you good? bad? indifferent?" then he glanced at his wrist.
"My goodness I'm late!" said the now jolly fellow, "Can you send me the bill? There'll be payment to follow!" Before I could answer, as quick as a blink, The man disappeared with a smile and a wink.
I ran to the door and peered into the night, To see nine healthy deer lifting off into flight. As I turned to come in, a voice called through the night "Merry Christmas to all, and to all a good night!"