If you have trouble getting a stubborn calf to drink from a bucket, try this strategy. Drop a rubber duck bath toy into the bucket of milk. A calf learning to drink from a bucket will often “fish” for the rubber duck, says Pat Hoffman, dairy researcher at the University of Wisconsin’s Marshfield Agricultural Research Station. Each time her nose pushes the toy into the milk, she gets a taste of it, which helps her learn to drink from the bucket.