Best Answer: The symptoms of lactose intolerance can manifest anywhere from 30 minutes to 2 hours after ingestion of lactose containing food. The symptoms can last up to 3 days following ingestion. Although the severity of symptoms vary with each individual, here are the most common reactions: -Abdominal discomfort.
For the number of different kinds of animals, or species, is higher than youâd ever imagine. The class of animals that human beings belong to, the mammals, includes close to 5,000 species. The number of birds is over 15,000. There are more than 3,000 kinds of snakes, and 300 kinds of turtles.
Back to Animals. 1  Live young-Most mammals give birth to live young (instead of laying eggs like birds or reptiles). 2  Marsupials-Marsupials are special types of mammals that carry their young in a pouch. 3  Egg laying-A few mammals lay eggs, they are called monotremes. 4  A giraffe's tongue is 20 inches long. 5  A hard working mole can dig a hole up to 300 ...