Endocrinology is the study of 
hormones and there are several common endocrine disorders found in dogs and cats. Hypothyroidism is often diagnosed in dogs and Hyperthyroidism in cats. Hypothyroidism indicates that the animal has low levels of circulating thyroid hormone. Hyperthyroidism is true for cats. They are frequently diagnosed with high levels of circulating thyroid hormones.
Another example of an Endocrine Problem is Diabetes where the blood sugar level is affected.
There are many signs observable in pets with endocrine disease. These signs include (but are not limited to) the following: abnormal energy levels, abnormal behavior, abnormal drinking, urinating and eating behavior, excessive panting, skin disorders, and weight gain or loss.
| Hypothyroidism in Dogs | Hyperthyroidism in Cats | |
| Diabetes Mellitus in Dogs | Diabetes Mellitus in Cats | |
| Diabetes in Dogs – Testing and Monitoring | Diabetes in Cats – Testing and Monitoring | |
