A couple of days ago, Oscar the dog’s mamma told me that she had seen a large brown rat in their garden. Ever-hopeful, I asked her if she were sure that it wasn’t a very big mouse, or an unusually skinny-tailed squirrel. She was sure.

I suggested to her that, if she ever saw it again, provided Oscar weren’t in the vicinity, I would happily flick Louis Catorze over Le Mur and let him have a bash at catching it. However, I hadn’t quite expected him to catch it of his own accord, so soon after our conversation. Nor had I expected him to bring the damp, stinky carcass up to our bedroom.

Worse yet, it was our easily-startled cleaning lady who found it. I came home to find her so traumatised that she could barely speak, and eventually I managed to get it out of her that there was a rat in our bedroom. (Once again I said, “Are you sure it’s not a mouse?” although, deep in my heart, I knew.)

As she and I stood staring at it and wondering what the heck to do, Louis Catorze picked that very moment to switch into psycho play mode and attack her feet. Because he ambushed her from behind, she felt him before she saw him and, thinking he was another rat, she screamed as if she had been shot.

I went to look for a bin bag and, naturellement, we didn’t have any, so I had to take the sturdiest plastic bag I could find, which was a Selfridges one. Once Ratty was safely entombed I dropped a 2p coin in with him, hoping it would land squarely on his body and give a sense of scale when I provided people with photographic proof of how big he was. But, unfortunately, it sort of wedged in at his side and, because it was the same colour as his body, it ended up looking more like some sort of cystic growth than a 2p coin, adding to the horror of the whole situation.

Whilst our cleaning lady sat in a corner and cried quietly, I headed for the park bin where so many of Catorze’s victims have been laid to rest, praying that nobody would see me. Although, if you don’t want to be seen, you should carry an unobtrusive, plain bag and leave the house whistling nonchalantly. Leaving the house holding a bright yellow Selfridges bag with your fingertips and at arm’s length, all the while shuddering and retching, probably isn’t the way. And, of course, I bumped into Bert the dog’s daddy, who was working on his car in the street right outside Le Château, and I was forced to explain the bag and the shuddering and retching.

So now I am confined to Le Château on account of being too ashamed to leave it, and Louis Catorze is banned from the bedrooms on account of being too disgusting. And our poor cleaning lady will probably never lead a normal life ever again. Cat Daddy, however, can’t help but admire his boy’s pest control efficiency, and this has been echoed by Dog Mamma, who is delighted that Catorze has done his civic duty. Another friend said, “Isn’t it reassuring to know that he’s such a good rat-catcher?”

I don’t know what makes a “good” rat-catcher. But I’m pretty certain that depositing smelly rat corpses in spotlessly-clean places where there were no rat corpses before, isn’t it.