To find this information, I recommend checking the following resources:
* Birmingham City Council website: The city council might have statistics on pet ownership or animal control reports that could provide an estimate.
* Local animal shelters or rescue organizations: These groups often track the number of animals in their care and might have insights into the overall dog population.
* Birmingham Humane Society: The Birmingham Humane Society might have data or be able to point you to reliable sources.
* The United States Department of Agriculture (USDA): While they may not have data specific to Birmingham, they may have national statistics on pet ownership.
Please note that even these sources may not have precise numbers, as pet ownership is not always officially recorded.