Which deficiency is most commonly associated with the development of rickets in dogs?

Rickets is a condition that affects the bones, leading to weak or deformed structures in growing animals. It is primarily associated with deficiencies in essential nutrients, particularly calcium and phosphorus, as well as Vitamin D, which is crucial for calcium absorption. In dogs, a deficiency in calcium is the most commonly linked factor to the development of rickets.

Calcium plays a vital role in maintaining strong bones and teeth. When there is an inadequate intake of calcium in a dog's diet, the body may pull calcium from the bones to ensure that vital physiological functions continue. This can lead to a decrease in bone density and strength, making bones more susceptible to deformities and fractures characteristic of rickets.

In contrast, while Vitamin C, iron, and protein are important for various bodily functions and health, their deficiency does not specifically lead to rickets in dogs. Vitamin C is important for immune function and skin health, iron is crucial for blood production, and protein is vital for growth and muscle function. However, they do not directly impact bone health in the same way that calcium does.