Animal fostering care

For starters, my English isn't great so please excuse me for my grammar and lack of vocabulary. What I do is mostly take in (foster) cats/dogs or kittens/puppies in need for and will be put up for adoption as soon as possible. I don't have a lot of space to help more than 10 but I am very in need financially to spay/neuter and vaccinations. Sometimes the cats/dogs that comes in are sick or extremely skinny that needs a lot of food. Any amount of donations are very much appreciated and as a side note, if you do own a pet please, PLEASE, spay/neuter them to avoid overpopulation in the animal shelter.