Diagnosis

Strong circumstantial evidence of cancer can be achieved through x-rays, blood tests, ultrasonography, physical examination and medical history.

Prevention

Early detection and treatment are the best ways to treat cancer in animals.
The different animal classes Skin – Skin tumors are very common in older dogs, but much less common in cats. Most skin tumors in cats are malignant, but in dogs they are often benign. Breast – 50% of all breast tumors in dogs and in a greater than 85% in cats are malignant. Spaying your female pet between 6 and 12 months of age will greatly reduce the risk of breast cancer
Head and Neck – Cancer of the mouth is common in dogs and less common in cats. Signs to watch for are a mass on the gums, bleeding, odor, or difficulty eating. It may also appear inside the nose of both cats and dogs.

Lymphoma – Lymphoma is a common form of cancer in dogs and cats. It is characterized by the growth of one or more lymph nodes in the body.
Feline Leukemia Complex – The feline leukemia virus is contagious among cats and will occasionally cause different types of cancer. It is not contagious to humans

Testicles – Testicular tumors are rare in cats and common in dogs, especially those with retained testes.

Abdominal Tumors – Tumors inside the abdomen are common but difficult to diagnose early. Weight loss or abdominal enlargement are signs of these tumors.

Bone -  are most often seen in large breed dogs and rarely in cats. The leg bones near joints, are the most common sites

How is Cancer?
Each type of cancer requires individual care and may need a combination of treatment therapies such as surgery, chemotherapy, radiation, cryosurgery (freezing), hyperthermia (heating) or immunotherapy.
Signals in Small Animals
· Abnormal swellings that persist or continue to grow
· Nonhealing ulcers
• The weight loss
• The loss of appetite
• The Bleeding or discharge from any body opening
• The offensive odor
• The difficulty eating or swallowing
• The refusal to exercise or loss of resistance
• The persistent lameness or stiffness
• The difficulty breathing, urinating or defecating