并列题名：Shetland sheepdog Shetland sheepdog 并列题名：Wetland ecology 并列题名：Maser and the dog 并列题名：Old English sheepdog 并列题名：Kit and dog 并列题名：The sheep-pig 并列题名：Too many sheep 并列题名：Wetland birds 并列题名：German shepherd dog