I am getting the error - No Remote Site named ‘animals_http’ was found with the correct Name, URL, and Description.

I have attched my Remote site setting. 

public class AnimalLocator { 

    public class Animal { 

        public Integer id; 

        public String name; 

        public String eats; 

        public String says; 

    } 

    public class AnimalResult { 

        public Animal animal; 

    } 

public static String getAnimalNameById(Integer id) { 

        Http http = new Http(); 

        HttpRequest request = new HttpRequest(); 

        request.setEndpoint('

' + id); 

        request.setMethod('GET'); 

        HttpResponse response = http.send(request); 

        AnimalResult result = (AnimalResult) JSON.deserialize(response.getBody(), AnimalResult.class); 

        return

; 

   } 

} 

************************************************************ 

mock test- 

@isTest 

global class AnimalLocatorMock implements HttpCalloutMock { 

    // Implement this interface method 

    global HTTPResponse respond(HTTPRequest request) { 

        // Create a fake response 

        HttpResponse response = new HttpResponse(); 

        response.setHeader('Content-Type', 'application/json'); 

        response.setBody('{"animal":[{"id":1,"name":"chicken","eats":"chicken food","says":"cluck cluck"},{"id":2,"name":"duck","eats":"worms","says":"pek pek"}]}'); 

        response.setStatusCode(200); 

        return response;  

    } 

} 

*************************************************************** 

Animal locator Test- 

@isTest 

private class AnimalLocatorTest { 

@isTest static void testGetCallout() { 

    // Set mock callout class  

    Test.setMock(HttpCalloutMock.class, new AnimalLocatorMock());  

    // This causes a fake response to be sent 

    // from the class that implements HttpCalloutMock.  

    String response = AnimalLocator.getAnimalNameById(1); 

    system.debug('Test Response1--->'+response); 

    String expectedValue = 'chicken'; 

    System.assertEquals(expectedValue,response); 

    String response2 = AnimalLocator.getAnimalNameById(2); 

    system.debug('Test Response2--->'+response2); 

    String expectedValue2 = 'duck'; 

    System.assertEquals(expectedValue2,response2); 

} 

}