Gosh, I suck at limericks, but they are definitely fun to read!! Lemme give it a shot...
Ok, my cat Marius has a total foot fetish and absolutely loves fresh shower feet...so here's a limerick about it...

I have a fat white cat,
Who waits for me on the bathmat.
He's addicted to toes,
As everyone knows...
So what can you say about that??

This doesn't have anything to do with pets, but I did come up with a limerick about one of my friends on the fly after an interesting night out with him...we both laughed so hard about it the next day...Here it is...a true story...

There once was a man, Sreedhar
Who had a few drinks in the bar...
2 Kamikazees...
3 Long Island Iced Teas...
And then he puked in his car!!! LOL LOL LOL

I'll have to ponder some more kitty ones. Common ya'll!!! Join in!!!

P.S. Never be embarassed to say "ya'll"! LOL I'm originally from souther Indiana and it just slips out every now and then