Grades K â 12 | Student Interactive | Organizing & Summarizing. Story Map. The Story Map interactive is designed to assist students in prewriting and postreading activities by focusing on the key elements of character, setting, conflict, and resolution.
With hemangiosarcoma, the pericardium fills up with blood due to rupture of the tumor. When the tumor occurs in the skin, a mass or lump can usually be felt in or under the skin. The mass may become ulcerated and bleed. When the tumor occurs in a bone, it can cause pain and discomfort.
Cataracts have many causes in dogs, and sometimes it is not possible to identify the cause of cataracts in affected patients. 1  Most cataracts in dogs are inherited and can occur at any age. 2  The second-most common cause of cataracts in dogs is diabetes (diabetes mellitus).