How to help a stray cat with open wounds when vet care is too costly?
Poor cat! There are no photos attached so I can't see what this wounds look like but I can say that if there is pus, it's infected. This cannot be treated at home, he has to see a vet as soon as possible. If you can't afford a vet, I can give you some financial resources that may help help you. Your other choice is to take him into the local SPCA. They can treat him and find him a home. Best of luck.
If paying for a vet is an issue, you can see if your vet accepts payment plans, if there is a low cost clinic in your area, or you can apply for Care Credit online. There is also an organization called Red Rover that give grants for treatment of sick animals, and you can see if you qualify for one of their grants. Best Friends also has a list of resources that offer financial assistance on their website. I'd also see if you can borrow money from family and friends.
http://www.humanesociety.org/animals/resources/tips/trouble_affording_pet.html?credit=web_id91754962
https://www.redrover.org
https://www.carecredit.com
http://bestfriends.org/resources/financial-aid-pets
http://lessonsfromaparalyzeddog.com/when-pet-owners-cant-afford-veterinary-bills/
http://www.dogheirs.com/resources-affordable-veterinary-care/
Updated on September 23rd, 2025