Science: Horse of a Different Stripe

Or, what is that baby zebra doing inside my stall?

In Kentucky, the sight of a horse giving birth is nearly as common as bluegrass. But last week when a 26-year-old mare named Kelly rolled over to foal on the clean straw of her specially lit, rubber-padded stall at a farm outside Louisville, the two attending veterinarians monitored the birth with more than customary anticipation. Reason: the newborn animal that later staggered uncertainly to its feet was a zebra.

The colt is the result of the first successful embryo transfer between two different equine species....

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