"My friend and her husband were looking for a Labrador Retriever on Craigslist. They saw a post about a female 'purebred Labrador' that was 'last of the litter' and decided to buy her," Barrow ...

There was a concern that the reproductive cycle of female lab animals would "mess up the data, make it too variable," said Lise Eliot, a professor of neuroscience at the Rosalind Franklin ...

The research reflects an increased focus on the biology of female lab animals and how they might differ from males in unpredictable ways, experts tell The Scientist. “In the old times (maybe not so ...