In 2009, an estimated 62.1 million metric tons of eggs were produced worldwide from a total laying flock of approximately 6.4 billion hens. There are issues of regional variation in demand and expectation, as well as current debates concerning methods of mass production.
Olives are not toxic to cats, but have little nutritional value. Green olives and pimentos contain chemicals similar to those found in catnip, so some cats may be especially excited by olives.
Some people think all cats are finicky which is not true. I've seen cats eat some amazing things â pasta, peanut butter, etc. To answer your question, olives are not toxic or considered bad for cats, however there is nothing in olives that they need. If your cat is in good health and seems to tolerate the olives well, then it is probably okay. I'd limit how much you give and keep it minimal.