Kitties VS guns
A mother of one of the children killed at Sandy Hook told an interviewer that it takes longer to adopt a kitten than to buy a gun. Our local TV station decided to do both. Entering a gun shop he passed all the background tests with no problem since he was clean and had no record. He was able to purchase a gun that day.
Then he went to a shelter and tried to adopt a cat. There was a long form to fill out including how many people live in your house, do you rent, phone number of landlord, do you have other pets, names and health records of those pets, name of veterinarian to check if animals are up to date with shots, and all your other pets must be spayed and neutered as well as the newly adopted one.(If not already).
The Connecticut mom said they even called her neighbors to find out what kind of family they were.
I can attest to all the above as I have rescued many pets including the six I have now. In fact I had to drag all four of my totally indoor cats to the vet for rabies shots before I could rescue my dog.
So the answer is even if you passed both tests with flying colors, you can walk out with a gun that day and it takes three or four days to get a cat.