There's obviously something seriously wrong with your friend.

She has issues. Both cats and dogs are wonerful. I've always had both and none of them were aggressive.

I'm a cat person, but I lived with six different dogs for a few years because they belonged to my roommates. They're naturally the sweetest creatures.

Your friend is straight up stupid.

Maybe she's only saying that to contrast all the shit people say about ALL cats. Dogs and cats are both only bad or good based on whether they're treated well or poorly

Tell your bitch ass friend that dogs are way more loyal than cats. I should know because I had both. When my dog runs she comes back. When my cat runs. Well we're still looking for him. Tbh good riddance

I think she has cats and dogs mixed up. Dogs are great. Cats are satin.

Dogs are wonderful. My dog is my best friend.

It sounds a bit like OP's friend has a legitimate phobia of dogs- which doesn't excuse her failure to train her cats not to scratch. (Also, going to point out that "there are no bad pets only bad owners" is complete bullshit- animals have just as varied of personalities as humans, which means there are in fact animals that are just complete assholes, just like humans. They may even be nice to someone they like, but happily maul a passerby, much like how some serial killers have a person that they are fond of and will keep them alive because of it.)

Your friend's a dumbass