What is a common indication for using Levothyroxine in animals?

Levothyroxine is primarily indicated for the treatment of hypothyroidism in animals. This condition occurs when the thyroid gland does not produce sufficient amounts of thyroid hormones, which are essential for regulating metabolism, growth, and overall health. Administering Levothyroxine helps to restore normal hormone levels, allowing the animal's metabolic processes to function effectively again.

In cases of hypothyroidism, symptoms can include weight gain, lethargy, skin problems, and intolerance to cold. By providing the synthetic thyroid hormone found in Levothyroxine, these symptoms can be managed, leading to improved health and quality of life for the affected animal.

The other choices represent conditions that are not treated with Levothyroxine. Hyperadrenocorticism, for instance, relates to excessive production of cortisol, and liver or kidney diseases have different treatment protocols that do not involve thyroid hormone replacement. Thus, Levothyroxine specifically targets hypothyroidism, making it the proper choice for this question.