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.
In the early 1980s, before this bacterium was discovered, many blamed spicy food, acid, stress, alcohol, smoking and lifestyle as the major cause of peptic ulcers. But in 1982 scientists discovered the H. pylori bacterium and identified it as the culprit of most stomach ulcers. You can get H. pylori from food, water or utensils.