Pliny says that in his time it was considered fortunate to meet a white rat.
Mo-li Shou has two whips and a panther-skin bag, the home of a creature resembling a white rat, known as Hua-hu Tiao.
He was not even like a white rat that could be secreted under one's bed till its unfortunate odour resulted in painful research.
In a cage by the window sat a white rat painted in faint alternate stripes of blue and pink.
I had a white rat, which I had obtained with difficulty through the Underground.
Tommy was in his night-shirt, with the white rat running over his shoulders.
In his bedroom I could see Tommy, holding the white rat in one hand and kneeling a moment at his very transient prayers.
For instance, if you had a white rat' (the Hermit shuddered) 'and I gave you a brass cannon for it, that would be a swap.'
Nell had a white rat curled up in her hair and another nestling in her neck.
I shall be obliged to tell all that occurred in the attic when the white rat died.
white rat n.
A domesticated albino variety of the Norway rat, used extensively in laboratory experiments.