Please help me try to save my best friend

Hi my name is Joshua Lorcy, today me and Zeus went for a routine walk outside and I noticed him not acting as himself. I ended up picking him up and running him home and noticed he was having a heat stroke. The doctors are telling me he is in a severe state and the medical costs to even attempt to save him will total around 6-15k depending on how much care he needs. I’ve already covered 6,952 dollars of the cost and I’m looking for additional help to save my best friend. I’m sorry to inconvenience anyone at this time but this was my last resort. Anything helps, thank you.