No problem with pets... I've seen that some have a pet version.. However I just put the cats out when we're out!
Funny story.. One Christmas we hung a large decorative star from the hall ceiling. you can guess what our neighbours phoned to tell us later that day...... lol.
On topic.. I looked at the dataset for the Bosch blueline and in the spec it states
Relay: Solid state, supervised, Form A normally-closed (NC)
contacts rated for ≤100 mA, 25 VDC, 2.5 W, <20 Ω
closed
I thought Form A was the descriptor for a normally open contact?