In todayâs world, weaning is not done to aid the mother. Rather, it is done because puppies generally make their way to their new home at about seven weeks of age, and since their mother is not going with them, the pups need to have their gastrointestinal tracts accustomed to eating commercially prepared foods.
Causes of stomach ulcers. Stomach ulcers are usually caused by Helicobacter pylori (H. pylori) bacteria or non-steroidal anti-inflammatory drugs (NSAIDs). These can break down the stomach's defence against the acid it produces to digest food, allowing the stomach lining to become damaged and an ulcer to form.
Causes of Peptic Ulcers. Different factors can cause the lining of the stomach, the esophagus, and the small intestine to break down. These include: 1  Helicobacter pylori (H. pylori) - a bacteria that can cause a stomach infection and inflammation. 2  frequent use of aspirin, ibuprofen, and other anti-inflammatory drugs (risk associated with this behavior is increased in women and people over the age of 60). 3  smoking. 4  drinking too much alcohol.