Rats at Singapore Zoo deprived of air? Vet says rodents in good health, are ‘exploring new scents’
“They were acting abnormally, putting their noses to breathe through the fine holes and gaps in the edges. At times they can be seen climbing on top of each other to do so,” it said
It claimed that people working at the zoo apparently said that the rats were "looking for fresh air" and the workers would “open the acrylic box for 30 minutes a day”
Evidently, the animal welfare group believes that this was "not enough"