You do everything you can to keep your new puppy happy, and having fleas is definitely not a happy time. Keep these tips in mind to keep your puppy healthy, happy, and flea-free.
The common flea not only causes your dog discomfort, but it can also transmit disease, pass on tapeworms, and cause anemia, especially in vulnerable puppies and older dogs. Regularly inspect your dog for any signs of fleas. Intermittent scratching, biting, and gnawing, plus evidence of flea dirt between your dog's back legs or on top of his rump, are telltale signs of fleas. If your dog is constantly biting and gnawing himself or you can actually see fleas, you've got a full-blown infestation. To check out your dog for fleas, have him stand in a bathtub and vigorously rub your hands through his fur. If little dark dots fall on the tub floor, they're likely either fleas or flea 'dirt' (excrement). You'll know you've got fleas if the 'dirt' turns red when you add a drop of water.
These products work by preventing fleas from biting or reproducing. They are the flea control methods of choice, and when used faithfully as directed, help pet owners avoid many dog health issues associated with fleas.
Pregnancy and nursing are not only responsible for many changes in a dog's body, but for changes in her lifestyle as well. If your dog is pregnant or nursing, pay special attention to her changing nutritional needs as she carries, delivers and nurses her puppies.
If you're planning to breed your female dog, it’s important to assess her body condition well in advance of breeding. Because of the physical demands of pregnancy and nursing, a dog with less-than-ideal health can experience problems:
Be sure to feed the proper amounts of a complete and balanced diet. This will support the mother's healthy weight and body condition before breeding and help maintain her health and that of her babies throughout pregnancy and lactation.
The gestation period for dogs is nine weeks. Pregnant dogs gain weight only slightly until about the sixth week, and then gain weight rapidly.
The energy requirements of pregnant dogs are reflected in the pattern of weight gain. Pregnant dogs will need to consume 25% to 50% more than their normal food intake by the end of pregnancy, but energy requirements do not increase until about the sixth week.
The best diet for pregnant and nursing dogs is a high-quality, nutrient-dense pet food formulated for all life stages or for growth. Although puppy diets are generally recommended for pregnant or nursing dogs, large-breed puppy formulas may not be appropriate for this use due to their adjusted energy and mineral content.
Pregnant dogs lose weight after giving birth, but their nutritional needs increase dramatically. Depending on litter size, nursing dogs might need two to three times their normal food requirement to nourish their pups. Be sure your nursing mom has plenty of water so she can generate the milk volume she needs to feed the litter.
To help your nursing dog get enough nutrition, you can try several tactics:

By four to five weeks after birth, most puppies are showing an interest in their mother’s food. Gradually, the puppies will begin eating more solid food and nursing less. At the same time, the nursing mother will usually begin eating less. Most puppies are completely weaned around age 7 to 8 weeks. By this time, the mother's energy requirement is back to normal, and she should be eating her normal pre-pregnancy diet.