Skymos unexpected vet bill

My sister’s fur baby needs some help. He has not been feeling great and now is at the vet being seen to, he needs to have some unexpected expensive tests done to try to identify what’s going on with him, also once they get it figured out he will possibly need treatment/medications which will also cost a lot of money.I know my sister would do anything she can for him, so I want to try and help them out by raising some money to go towards his care.