Hide and squeak: German scientists reveal the playful lives of rats

Hide and squeak: German scientists reveal the playful lives of rats

Scientists in Germany have been discovering the human side to rats, raising difficult ethical questions about their use in medical experiments. Here's what they found.

Munich man seeks help to care for his 300 rats

Munich man seeks help to care for his 300 rats

Rats return to Pied Piper’s Hamelin

Rats return to Pied Piper’s Hamelin