The aging of dogs and cats involves a series of health risks that can affect their quality of life. Here are some of the common risks for older dogs and cats:

Health risks for dogs
Joint problems: Osteoarthritis (degenerative arthritis) is a common problem, which causes pain and decreased activity.

Heart problems: Older dogs may develop heart disease, including cardiomyopathy and valvular leakage.

Dental problems: gingivitis and tooth loss, which can lead to other health problems.

Digestive system problems: such as food intolerance or intestinal diseases.

Diabetes: This is a more common problem in older dogs, which can require regular treatment.

Cancer: The risk of developing different types of cancer increases with age.

Loss of senses: loss of sight, hearing and smell may affect the dog's quality of life.

Health risks for cats
Kidney problems: Chronic kidney disease is a common problem in older cats.

Dental problems: gingivitis and tooth loss, which can affect general health.

Diabetes: Cats can also develop diabetes, especially if they gain weight.

Thyroid problems: Hyperthyroidism is a common condition in older cats.

Cancer: Old cats are at a higher risk of developing cancers.

Decreased senses: cats can also suffer from decreased vision and hearing.

Summary
In order to maintain the health of older dogs and cats, it is important to carry out regular medical examinations, take care of an appropriate diet and adjust the physical activity to the fitness level of the pet.