Absolutely.
I also pay special attention to my cats whenever they act weird around the tanks.
Right before this happened...
... This little one was giving the tank a very suspicious side-eye.
She normally ignored the tank (other than to occasionally lick dried salt off of the stand) so when she was acting like it was a monster, that warned me that something was about to happen. I went to get a bucket... and right as I got back with said bucket, it started leaking from the back left corner.
Since then, whenever she starts giving the tank funny looks, I'm always more than a bit paranoid. Thankfully, none of my subsequent tanks have actually leaked (structurally) but she has alerted me to a few non-structural leaks.