Toothed whales (Odontoceti) this group includes dolphins and orcas. These whales eat meat.   Baleen whales (Mysticeti) This group includes the Blue whale, Grey whale â¦ and Minke. They pull in a mouthful of seawater and feed on plankton.
Weight Gain Patterns. Between 1 to 4 months of age, an infant will generally gain 1 1/2 to 2 pounds per month, explains HealthyChildren.org, the website published by the American Academy of Pediatrics. From 4 to 7 months, his weight gain will slow to 1 to 1 1/2 pounds each month. A healthy baby boy will weigh between 14 1â2 and 17 1â2 pounds at 8 months; infant girls normally weigh about half a pound less than infant boys. By 12 months of age, a baby weighs about three times more than she did at birth.
Breastfed versus Formula Fed. Believe it or not but the milk you feed your baby will affect his weight gain. In general, babies who are breastfed gain less weight and gain slower than babies who are formula fed. A breastfed baby should gain between four and seven ounces every week during the first month of life. The first six months of life the baby should gain one to two pounds per month. Then, from six months to one year the average growth rate is one pound per month. Lengthwise, babies will grow about one inch per month until six months and then about one half inch per month until their first year.