We've come a long way since Dolly the sheep. But how viable is this technology? A recent study took a hard look at cloning in horses, and the findings may have implications for all types of practice.
Source: Johnson AK, Clark-Price SC, Choi YH, et al. Physical and clinicopathologic findings in foals derived by use of somatic cell nuclear transfer: 14 cases (2004-2008). J Am Vet Med Assoc
for link to abstract.