Glycol, another animal-based chemical, is found in brake fluid and glycerol is one of the main ingredients to make asphalt stick together. If they listen to the radio on the way to work or take in a concert later in the evening, they are hearing sheep in action. Sheep by-products are used to make strings for instruments such as violins and heads for drums. Sitting down to dinner by candlelight includes sheep. Tallow candles are kind of messy, but they're the real thing, and they're made from sheep.
Modern candles use stearic acid and paraffin which also come from sheep.
Serving wine and cheese before dinner is nice and the cheese is available because of the sheep rennet to make it. The fancy carving set for the leg of lamb comes from horn and bone tissue, and softening agents in baked goods, as well as plasticizers in shortening, are made from sheep by-products. Desserts like ice cream and yogurt contain gelatin, a protein product made from horns, hooves and bones. Should the American consumer decide to photograph a memorable evening, they will again be using animal gelatin processed into photographic film. If spending the evening by candlelight doesn't thrill the consumer, sporting events abound.