To enable this, create a smart collection named All Products and set the condition to 'Product price is greater than 0'. You can create a collection through the 'Collections' menu in Shopify admin. Or you can turn this section off through theme settings.
We have an enormous selection of soft pet carriers that can be used to transport both cats and dogs. Some are top loading for those pets that are resistant to travel, others have wheels. Most are airline compliant. Check 'em out!