The wrong rats are breeding.

Well, I know all rats breed five, mebbe more, times a year and can have as much as twelve in a litter.

In addition, rats bred to be heterozygous for BDNF, therefore reducing its expression, have been observed to exhibit similar hippocampal atrophy.

Worse, rats and flies are breeding as never before, adding to critical sanitation and hygiene problems.

It won't breed big plants any more than a rat with his tail chopped off will breed tailless rats.

The rats breed in the summer and autumn, and may give birth to up to two litters a year.

The brown rat can breed throughout the year if conditions are suitable, with a female producing up to five litters a year.

In one study, rats bred to become obese were fed either a high-fat diet or a low-fat diet rich in blueberries.

The rats are breeding in them as if it were spring, and..." He mingled it all together, according to what he felt was most pressing.

The rats are breeding in them as if it were spring, and. . . .