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.
Concentrated as an essential oil, lemongrass can poison cats. Unlike dogs, people and horses, cats lack a liver enzyme (glucuronyl tranferase) required to break down the components of most essential oils, including lemongrass. If ingested, these components build up and can reach toxic levels or cause liver damage.