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.
In cats, Lilium and Hemerocallis genera lilies are the most dangerous. Eating even a small amount of the plant will have a severe impact on a cat's system, causing severe symptoms such as gastrointestinal issues, arrhythmia, and convulsions. Daffodils are also toxic to both dogs and cats, especially the bulbs.