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.
Lilies are just one of the plants that are dangerous for your cats to eat; according to the American Society for the Prevention of Cruelty to Animals, more than 400 herbs and plants are poisonous to cats.