Calboli et al on the staggering loss of canine genetic diversity in the last 30 years alone

“Dog registration rules have been rigidly enforced only for  ≈ 50 years; prior to that occasional outcrossing was still possible. Anecdotal evidence suggests that loss of genetic variation and high levels of inbreeding have adverse consequences for canine health and fertility.We have found that the loss of genetic diversity is very high, with many breeds [...] http://bit.ly/b1KWVI