But one way the city tracks the fight against rats is by calls to 311. The downward numbers are a sign, Corradi said, that ...

There's nothing unusual about the presence of rats in cities, but their increasing proliferation is of growing concern to the scientific community. A recent study published in the journal Science ...

Mr Bryan Huang, who visited the Bird Paradise in January, said he first caught sight of a rat while observing birds walking on the ground. "After that I started to notice more of them as I ...