A collective is a group of entities that share or are motivated by at least one common issue or interest, or work together to achieve a common objective. [citation needed] Collectives can differ from cooperatives in that they are not necessarily focused upon an economic benefit or saving, but can be that as well.
Hypothyroidism is a condition that occurs when the thyroid gland does not produce enough thyroid hormones to meet the needs of the body. The thyroid creates two thyroid hormones, triiodothyronine (T3) and thyroxine (T4) that regulate metabolism.
Hypothyroidism is a common disease in dogs, but rarely occurs in cats. The thyroid gland has a number of different functions, but it is most well known for its role in regulating metabolism by producing thyroid hormones. Hypothyroidism is the condition that occurs when not enough thyroid hormones are produced. Hypothyroidism causes a wide variety of symptoms, but is often suspected in dogs that have trouble with weight gain or obesity and suffer from hair loss and skin problems. Hypothyroidism is easy to diagnose with a blood test that checks the level of various thyroid hormones including T4.