I actually haven't got a clue what the cats are, which is both rare and kind of cool. Lorebane mentioned that they're in a sourcebook, and I have just about all of them from every edition, so it means I missed something.
@gilga
As for your post, I'm not quite sure where you're coming from. You're the one who said earlier, "It's a digital dice roller, just tell me how many times".
Perception checks - physical, astral, and Matrix - are problematic in Shadowrun and I could talk about them at length. Even if we're just buying hits, we have to be mindful of the forum. We can't expect the GM to crank out thousands of words to describe everything we could see or detect over even a short interval. A balance has to be struck between giving the players useful information and spoon-feeding us to the point where we don't have to think for ourselves. Personally I feel that it's going well so far.
In the current situation, I'm not even sure where the concern is coming from, given that the GM called for hacking rolls, not Matrix perception.
I'm also not quite sure which side gilga was taking when he mentioned that the building is old... should it be publicly available through county records or is it gone after a Matrix crash or two? I would argue the latter. I don't think we're going to get the building layout unless we go raid the apartment office for ancient blueprints, and maybe not even then.
@GM, gilga
What Mato would like, and hopes that AM can eventually provide, is a layout of the unit where the prisoner is being held. A map, or even a sketch, would be hugely helpful. Location of walls, the hellhound, the hellhound's chain, especially in relation to the exterior doors, etc. The location of the prisoner might have to be inferred if he isn't on camera, but even that will be very useful.