Weird...cats?

Came across a couple of stray cats when I was coming home today...they were staring into the drain...some of the people that passed by were all wondering what they were staring at O_o They didn't look like they were in predator mode...looking ready to pounce. They were just sitting down there on all fours...staring >_>

I should have taken a photograph with my mobile phone.

On a side note, I've never seen one of the two stray cats that were there before. Perhaps it's a cat that loiters at a HDB flat block that I never walk at?