I GM'd a similar game a few years ago where the runners had to break into a zoo and extract a couple penguins. The penguins were not excited about the plan and so they jumped into the water and swam off. Hilarity ensued.
For the life of me I can't remember how the runners finally got their hands on the penguins. There might have been a drone with a claw attached which allowed the dronomancer to use his knowledge of arcade games (specifically the claw/crane machine) to snag the penguins.
As for ideas for your campaign, have the cat compel the household staff to defend it. The runners need to be stealthy so that the switcheroo isn't detected, so they can't use lethal force on the French chef that charges them with a butcher's knife, or the maid that sprays bleach at their eyes, or the butler that levels them with devastating barbs about their manners and hygiene.