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.
All varieties of the oleander plant are poisonous for both dogs and cats. This plant contains cardiac glycosides which can cause sudden death from heart failure. The castor bean plant is deadly to both dogs and cats. The beans of this plant contain a toxin called ricin.