To find out if Costco's canned dog food is made in China, you would need to:
1. Check the product label: Look for the country of origin information on the can or packaging.
2. Contact Costco directly: You can reach out to their customer service department or visit their website for more information.
3. Research the specific brand: If the label doesn't provide the information, you can research the brand of dog food and see if they list their manufacturing locations.
Remember that manufacturing locations can change over time, so it's always best to check the most up-to-date information.