Bests & Worsts Reviews from Amazon

My dogs like Purina Beyond canned food. I have it on subscribe & save. I usually mix with their dry food and have been using the Salmon flavor, but decided to try the new chicken, lamb and spinach recipe. I have used 4 cans already, but I noticed that the one I opened this morning had black residue on the inside lid and down the side - mold?! I opened a couple other cans but they weren't like that. There is no indication that the can was damaged or bulging. Not sure I have confidence in the safety/quality of this anymore.