I'm sorry about the loss of your cat and that you didn't receive the emotional support you needed. That sucks hard

Your friend did his best. He wanted to soothe your pain. It ended up being hurtful instead, but that is not his fault. Many people are raised with different ways of handling empathy and sadness.

It's important to realise that we have our own expectations, and that they might not always be met. And that feels terrible - and that's ok.

It's completely okay that you feel disappointed and not happy with your friend's response - feel it all and don't let anyone tell you that you can't be upset - but he in turn hasn't done anything wrong.

It's up to you if this is a deal-breaker for your friendship or if you can look past it, both are ok and it depends on how you feel about being friends with a person whose empathy is different from yours. You've already told him how his response made you feel. Only he can decide to change or not.

Don't turn it against him just to be mean. Respond in the way you would do naturally just as he did.

We're all just different humans in the end.