Both of our senior labs developed cancer in the same year and switching to homemade dog cookies and dog foods literally made a night and day difference. We really feel we were able to enjoy a few extra months with our pets because they switched to healthy dog treats and food. If you're wondering about serving pumpkin to dogs with cancer, it's a fabulous vet approved food to give them and what our family vet recommended to us. Definitely check in with your vet to make sure it's ok for your pet to eat pumpkin. An added bonus with the pumpkin is that it helps their digestive system and keeping they're doggie poos regular (although a little orange).