i feed all my dogs on raw meat and raw meaty bones, i add a dried food that contains no carbs, just 70% meat 30%fruit and veg,, they look grand on it
in regards to does a dog need carbs, where would a wolf find pasta, rice, grain etc he wouldn't simple
i recomend barf all the way helps the dog stay content and happy, puts the weight on and keeps the weight on them after they've worked hard, no more smelly breath, shiny coat, clean teeth, healthy skin,,,,
all in all a healthy dog what more do you want