If your question is about how to record the cost of dog food for your watchdog in your accounts, then you can record it based on how you record your finances. If you use cash accounting, record this expense in your cash journal. If you use electronic accounting software, you can create a new expense category in the software and record the expense when you buy dog food.
Generally, the cost of the dog food of the guard dog can be regarded as part of the household living expenses, so you can Put it into a category like "Living Expenses" or "Household Expenses." At the same time, you can also create a separate expense category for the watchdog to better track its expenses. It is important to keep clear records and reconcile accounts regularly to ensure record accuracy. This way, you can better manage your family finances and ensure your finances are in good shape.