Rats were medium-sized, long-tailed rodents, a number of which lived in sewers and underground tunnels in the present.


Episode 1.2

A rat was scavenging in the London Underground tunnel by Arsenal Station, when it was attacked from behind and devoured by a Carboniferous Arachnid.

Episode 4.2

Five years before 2011 (circa 2006), when a baby Kaprosuchus was flushed down into the sewer, it came across a rat so it attacked and ate the rodent.

Other references

Episode 1.6

Helen Cutter speculated that in the future, species descended from rats were among the dominant predators.

Episode 2.5

When a Silurian Millipede ran past Connor Temple, he initially thought it was a rat, and exclaimed that rats really freaked him out.