Whitening ingredients do little in your toothpaste other than remove some stains. (All toothpastes remove stains.) No toothpaste can whiten your teeth permanently. Gels vs. pastes is more of a personal preference. Gels use silica as an abrasive to polish teeth while pastes usually use calcium carbonate.
For the fictional dog, see Snoopy. Cordozar Calvin Broadus, Jr. (born October 20, 1971), known professionally as Snoop Dogg (sometimes shortened to Snoop and formerly called Snoop Doggy Dogg and Snoop Lion), is an American rapper and actor from Long Beach, California.
Dr. Alexandra Horowitz is the head of Barnard's Dog Cognition Lab. Calvin Broadus, Jr. is the rapper better known as Snoop Dogg (or Snoop Lion). Both are leaders in their field. Dr. Horowitz studies how dogs process and understand the world.