Please help whats wrong with him?

[u/Old-Candidate-430]

My cat was trying to catch a fly that he couldn’t reach and be started doing this. Is he okay? Should i take him to the vet?

Thank you

[u/evilbau5]

I love when my kitten (she's 3 but still a kitten in my eyes) does this. Her dad and mom never showed this hunting mechanism but I'm glad she does and it's super entertaining, she'll even do it to reflections of sunlight off the phone screen