The color of your cat's vomit can sometimes give clues about why they're throwing up. However, if you want to know when to see the vet, you're much better off considering their age and health.

A cat may throw up for many reasons, ranging from benign to fatal. According to Kornreich, undigested hair – commonly referred to as hairballs – could be the cause of some cats' vomiting.

A cat may throw up for many reasons, ranging from benign to fatal. According to Kornreich, undigested hair – commonly referred to as hairballs – could be the cause of some cats' vomiting.

A cat may throw up for many reasons, ranging from benign to fatal. According to Kornreich, undigested hair – commonly referred to as hairballs – could be the cause of some cats' vomiting.

A cat may throw up for many reasons, ranging from benign to fatal. According to Kornreich, undigested hair – commonly referred to as hairballs – could be the cause of some cats' vomiting.