And ... Zenos ... doesn't actually do anything about the cat by way of trying to stop it.

That is not a miqo'te, nor an exceptionally tiny hrothgar, but it's wearing clothing (though that wasn't necessarily a measure of intelligence) and it's on the platform with the rest of them so perhaps it too is a kidnapping victim. Was there another tiny rucksack out there, cat sized and full of cat sized items?

"I'm afraid there's naught much of interest in there for cats," the Garlean murmurs. "Unless 'tis only a warm place to sleep you seek."

The only thing of value has been already removed. Letting other people, even kitties, get their hands on his tomestone wasn't going to happen.