Leptin helps hungry mice choose sex over food

The drug fasudil is found to reverse key symptoms of schizophrenia in mice

Scientists discover an "on-demand" male contraceptive capable of temporarily disabling sperm motility in mice. Balbach et al. describes how a single dose of soluble adenylyl cyclase inhibitor can render male mice infertile within 30 minutes, and return them to full fertility the next day

‘Mirror neurons’ fire up during mouse battles. These brain cells are crucial for triggering fights — but also become active when mice merely observe fights, reinvigorating a debate about the purpose of mirror neurons.