The 'AnimalLocator' class did not achieve 100% code coverage via your test methods. Make sure that you chose 'Run All' tests in the Developer Console at least once before attempting to verify this challenge

Hi,   

Go through this link:  https://developer.salesforce.com/forums/?id=9060G000000Xc4CQAS  

I hope it will Help you. If you find your Solution then mark this as the Best answer.    

Best regards     

Piyush Singhal