So here is my 2 cents on the pet/food discussion................
I don't eat duck so therefore I have a wonderful
PET duck named Daffy who lives in the house with us and sometimes is known to wear a duck diaper! She is a fabulous house alarm and even reacts faster than the 2 dogs we have! Plus she takes baths in the bath tub just like the dogs do. Oh and she lays eggs that as a bonus we get to eat! The dogs DO NOT do that! So in some cases YES our pets can also provide us with food and yet they themselves do not have to be eaten!
Just sayin........ What may to be normal for some, may not be normal for others. To each their own! We got to name our cows Patty & Burger. And boy those were some yummy tasting pets!