Emmadine the cow has no exciting stories to tell her grandcows, so she signs on with Admiral Byrd for a trip to the South Pole. She gets seasick on the way down, but she is sure the grandcows will be impressed by stories of 24-hour days and the echoing spouts of whales. When winter and total darkness arrive, she helps alleviate everyone’s boredom by teaching the cowherd and the other cows to dance. She misses the grandcows and is glad to head home, where she meets the president and gets a medal. The grandcows are rightfully impressed. Apparently several cows did accompany Byrd on his 1933 trip to the Pole. Spinelli has taken that fact as her jumping-off point for this charming and instructive tale. Slavin’s spirited acrylic illustrations are a perfect match. The picture of Emmadine’s uddermuff is worth the price. The lack of any sort of historical note would hurt a lesser tale, but Emmadine will win readers over. (Picture book. 4-10)