Author Michael Crichton was once asked if he visited genetic research labs before writing Jurassic Park. His reply? “No. Why would I? They don’t know how to make a dinosaur either.” That’s the fun of fiction. You can take something ridiculous and jazz it up with a little pseudo-science to create a great story. But in the real world of pet nutrition, science is better.
I recently saw a dog-food commercial that boldly stated that Golden retrievers and Labrador retrievers may look similar, but have very different nutritional requirements. Wow! I went through four years of vet school and seven years of practice without learning this. Until recently, my wife edited the premier veterinary text book in the country but also somehow missed that point while poring over hundreds of pages on nutrition.
News flash for pet-food advertisers. Not only do Labs and Goldens look similar, they are both retrievers from the sporting-dog group. Not only do they share similar nutritional requirement with each other, they share them with other members of the group, including spaniels and setters. Or for that matter, other large dogs like Dobermans and Shepherds. In fact, their nutritional needs are not very far off those of miniature poodles, with the obvious exception of kibble size and caloric intake. Now it is true that nutritional needs vary with age, pregnancy status, and illness. But to say that two similar, healthy retrievers are somehow internally alien, is for want of a better term, dog wash.
The other thing I’ve noticed lately is an appeal to politically correct perceptions of pet nutrition. I’ve seen ads touting a dog food that contains no genetically modified ingredients. Yet, there is no evidence that GMOs are at all harmful. In fact, genetic modification is not even new. It has been going on for centuries under the auspices of selective plant breeding. All genetic engineering does is shorten and simplify the process, so that only the desired traits (eg, disease/drought resistance, extra protein, etc.) are added to the altered plant.
Another type of ad appeals to the cave man in us, touting that dogs are wolves that should only eat meat. Ugh! While this might have some viewers beating their chests in a Tarzan yell, it is again not true. Dogs are not wolves. They are pet animals with a 10,000-year history of domestication. And even in the wild, wolves consume a fair amount of vegetation, like that yucky stuff in the rumen of a deer. Decades of research have shown that animal by-products and vegetable sources have benefits as cost-effective forms of nutrition. That’s something that name-brand dog foods like Purina, Iams, and Science Diet know well. In fact, all-meat diets can actually cause nutrient imbalances, especially in minerals like calcium and phosphorous.
So, whenever you see one of these dog-food ads, remember to take them with a grain of genetically modified salt. Then give your dog his Science Diet with a clear conscious.