Why is my cat throwing up pink, lethargic, and acting aggressive?
Hello, and thanks for using Petco Pet Education Center, formerly Petcoach. Poor Izzy! Vomiting and lethargy are very nonspecific symptoms and can mean a number of possible problems. I don't see an age in Izzy's profile; if she's young, I would worry more about a problem with her stomach or intestines, such as if she ate something that upset her tummy, or more seriously if she had foreign material stuck in her GI tract. If she's an older kitty, I would worry about a possible organ problem, such as kidney disease or diabetes. However, all of these problems could affect any age. If she was acting pretty normal, I'd suggest you could wait 24 hours and see if it self-resolves - but if she's also lethargic, then I recommend having her seen by your vet as soon as possible in case it's something serious.
Be very careful when you get her in the carrier - her growling is telling you that she's feeling crummy enough that she wants to be left alone, and if she's prone to nipping she might try to do so when you pick her up.
I hope this helps and she feels better soon!
Updated on September 23rd, 2025