If the plane has a "change of cabin pressure", the airline euphamism for "we blew a window at FL380 and have Rapid Depressurization you all are going to pass out in 8 to 10 seconds" how do you put the oxygen mask on your fish?

In a similar manner, what happens to the Precious Little dogs and cats in their crates and service dogs on the floor if the O2 goes? Are service dogs trained to hop on a seat and use a people mask, or are all these critters just SOL when the pressure goes? I can just imagine some Park Avenue matron who bought a FC seat for Fluffy Poo going totally berzerk having to watch the $50,000 Best In Show croak right before her eyes. . .