I am not sure if cats do have panic attacks rather more reactions to their environment. If they did have anxiety or stress, I believe they begin to lose their hair in patches. (At least that's what the vet claimed with one of my cats.)
Don't you feel bad when a cat has a panic attack? because unlike humans they can't speak and tell us how they feel. how do you think there feeling to us when there catching one?
Let’s just say it is not on my list of worldly concerns. Cats are trivialities. Their affairs are inconsequential to me.
Cats are (usually in the UK) much akin to vermin. They kill birds and small rodents. They dig up planting beds in neighbouring gardens. They take a dump on my lawn. The RSPB (google if necessary) have identified them as killing 55,000,000 birds in the UK alone every year. Chris Packham, well-respected naturalist, has described domestic cats as the "Greatest threat to wildlife in the United Kingdom". Do I care about their "panic attacks"? No, sorry.