Multnomah County rat inspections have fallen by more than half since 2019, and county rat experts don’t know why. “Yeah, that’s a mystery,” said Christopher Roberts, a Multnomah County Public Health ...
Although transplantation to different species is expected to bring benefits ... produce offspring from eggs obtained by transplanting rat ovaries into mice. The researchers implanted rat ovaries ...
One of the UK’s largest breed of spiders have had the biggest mating season on record as efforts to re-establish the species in the ... can grow to the size of a rat - but are completely ...