One reason why deep sea fish is commonly used as raw material for freeze-dried pet treats is because it is a rich source of nutrients that are beneficial for pets. Deepwater fish, such as salmon and cod, are known to be high in protein and omega-3 fatty acids, which can help support healthy skin and coat, reduce inflammation, and promote brain and heart health in pets.

Another reason why deepwater fish is preferred for freeze-dried pet treats is that it tends to have a low level of contaminants such as mercury and heavy metals. This is because deepwater fish tend to be larger and older, and they accumulate fewer toxins compared to smaller fish found in shallower waters.

Lastly, freeze-dried pet treats made from deepwater fish tend to have a longer shelf life than those made from other sources of protein. This is because the freezing and drying process removes most of the moisture, which helps to prevent spoilage and bacterial growth.

Overall, choosing deepwater fish as raw material for freeze-dried pet treats is a good choice due to its nutritional value, low contaminant level, and long shelf life.