What is my recourse?

I can't believe that a brand like Enterprise can't be held liable for medical expenses incurred because of contaminated "food" products consumed. i ALMOST LOST MY LITTLE YORKIE, BECAUSE OF IT. She is a very pernicity eater and I by accident gave her a piece of vienna and she absolutely loved it, so I went out and purchased a whole packet for her, she almost lost her life because of it. I ended up with a vet bill for almost R2000, just to pull her through. Even now she is still not 100% well, but she is still alive, but still puking on a daily basis. This is totally unacceptable