Support Angela's Cat in Urgent Need

My name is Angela, and recently my mom and I took my cat to the vet because he seemed very uncomfortable and was unable to urinate. We found out his bladder is blocked, and the costs will be $3000-$4000, with the only other option being euthanasia. His name is Cat, and he is only 4 years old. He is a rescue and the reason we decided to rescue our other cats and dog. We love him greatly and just can’t afford the costs. Anything helps.