Vegan dog food is trending. Shark Tank's Mark Cuban made a splash when he invested in a vegan kibble with the cameras rolling! That's just one of many vegan dog food products out there. Now, there's research into the benefits of a plant-based diet for dogs. Here to discuss is respected veterinarian Dr. Tonatiuh (Tona) Melgarejo, a Professor in the College of Veterinary Medicine at Western University of Health Sciences in California. JaneUnChained.com's Jane Velez-Mitchell does the interview.