Why do humans have canine teeth? Patrick McGannon, Surprise, Arizona All primate species have them, says Sabrina Sholts, a curator of physical anthropology at the Museum of Natural History.

While nothing fully replaces the gold standard of using a toothbrush ... filled bones or textured chews that can help keep ...

These are reasons brushing your dog's teeth regularly is critical in preventing dental disease. "The gold standard is brushing at least once daily for it to be of any real effect," Fiani says.