Antibiotic resistance is when the bacterial infection in a dog or cat fights against the chosen antibiotic successfully causing it to no longer work. This can cause reoccurring infections or infections that don’t ever truly go away. This issue can be avoided by giving the complete dose of antibiotics as prescribed and by making sure testing is done to ensure the proper antibiotic is chosen for that infection. Just like in humans, MRSA, and other resistant bacterias can occur in cats & dogs so it is important to run cultures to rule them out.