Only if the dog is not yours. If it is your dog, you, or whoever is the alpha-human, should be able to take anything from your dog without it attacking you. You have to establish that as a puppy. I do it to mine. When they are puppies I will give them a treat and then in a stern voice tell them to "drop it" while taking it from them. Then I reward them with a a "good dog" and let them have the treat back. Don't do this more than once a treat. Do it about once a week. By the time they are six months old you should be able to take anything away from them with no trouble. It has worked for all my dogs.
Can you recommend any good books or websites about raising/training dogs? We are going to get a dog for the family and I want to do some reading first.
You are so correct in this and how you train your dogs. I have a 90lb Rottie and a Cocker Spaniel, both of whom I can take the food right out of their mouths.
Believe it or not, the Rottie accepted me taking food from her within a day of adopting her into our home. My Cocker fought me for weeks about it. Now he even shares his food with one of my cats.
Those who do not train their animals well, who do not become the Alpha "dog" of the pact have so many problems with their pets.