Cat and dog dander are the same. People can be just as allergic to a dog,as they can be to a cat.
You just don't like cats and are looking for any excuse to demean and insult them. And for every two reasons you can come up with for NOT having a cat,I can come up with 20,why one shouldn't own a dog!
Look, if you try to outlaw dogs, then only outlaws will have dogs.
Is that what you want? Eh?
Or, for that matter, children.