Six Darn Cows (Kids of Canada)

"Those darn cows!" said Tod. "I wish they'd just get lost!"
But when the cows do get lost, it's up to Tod Bean, his sister Jen Bean and their black dog Zip to find them and bring them home. Tod and Jen learn that on a farm, everyone helps.
Short chapters and easy-to-read text make this story a perennial favorite.