By resisting antibiotics do you mean you think they weren't working or your cat did not want to take them? (pethelpful.com)
Oleg Tsodikov's structure of Eis, an enzyme that allows tuberculosis to resist an antibiotic of last resort. (sbgrid.org)
When an antibiotic is used, bacteria that can resist that antibiotic obviously have a greater chance of survival than those that are susceptible, and so the resistance passes to the next generation. (sciencedaily.com)