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.
Jade plants, daffodils and lily-of-the-valley are a few other plants toxic to cats. Thankfully, several species of plants are not toxic to cats and safe to plant either inside or outside your home. Herbs such as sage, rosemary, dill, mint, parsley, thyme and lavender are all nontoxic to cats.