Bleeding -- Bleeding from any part of the body; blood in the urine or stool.

Vomiting and/or diarrhea -- Many repeated episodes in a short period, or intermittently over a period of days or weeks.

Convulsions or fainting -- Violent shaking of the head or body with uncontrolled spasms; loss of consciousness.

Lethargy -- Lack of normal tolerance for exercise; reduced energy or playfulness.

Pain -- Limping or favoring a leg; crying or showing signs of pain when touched.

Eye Problems -- Redness, discharge, squinting, cloudiness of the eye; a foreign object in the eye, or difficulty seeing.

Weight loss -- Dramatic unexplained loss in body weight, or gradual weight loss over weeks or months.

Changes in appetite -- Refusing food or water; eating more or less than usual.

Changes in urination -- Urinating larger amounts, urinating frequently, urinating only small drops, or difficulty urinating.

Breathing problems – Shortness of breath, extending head and neck to breathe; wheezing.

Abnormal color of the gums – Gums should be pink; gums that are dark red, white, pale or blue can be a sign of an emergency.