Dirty Animal

An experimental animal—e.g., a mouse—with subtle brain defects—attributed by some workers to an impoverished environment/cage—that might compromise the experiment’s validity
References in periodicals archive ?
I was shocked and horrified that I'd been bitten by a dirty animal.
Pork is banned in Muslim households as the pig is considered a dirty animal.
We have no kind words for the economic development geniuses who were responsible for that dirty animal shelter development in central Van Nuys.
Poolton told a girl with an eating disorder she was a dirty animal, then forced food into her mouth and slapped her face three times.
She told the Irish Mirror: "When my periods started they never told me what it meant, they used to call me a dirty animal.
On visiting the shop, which smelled of urine and dirty animal bedding, officers had to provide the animals with food and water.
He bent down to put something in his rucksack and some dirty animal had the wallet out of his pocket.
Philomena said: "He bent down to put something in his rucksack and some dirty animal had the wallet out of his back pocket.
The woman, who didn't want to be named, added: "He's nothing but a dirty animal.
Dogs are widely considered dirty animals by the clergy and others in Iranian society.
He advised the people to be conscious of Congo virus threat which is reported to be transferred by contacting blood of a sacrificial animal, an animal having long hair or dirty animals.