With the delivery of frozen sperm from a stud dog in the Netherlands, Ann Boochever and Scott Miller’s rare Stabyhoun, ZZ, will increase the breed’s population in North America come mid-May. With only about 250 Stabyhouns in the United States and Canada, ZZ’s pups will be a significant addition.

Sheepdog at Westminister born using semen frozen 17 years A 5-year-old Old English Sheepdog in this week’s Westminster Kennel Club Dog Show is a miracle dog — born with semen frozen for 17 years. Rudy finished second Monday in his Best in Breed section, but owner...