One of Three

Well, this concludes a week of rodent catching.
This is specimen number 3, which expired possibly from dehydration after 3 nights in our house.
The ever elustrious feline of the house decided on Tuesday night to adorn our house with 3 presents, in a variety of locations
Specimen 1. Downstairs, next to his food bowls - deceased
Specimen 2. Upstairs in a spare bedroom. Found behind a chest of drawers - alive, but petrified. After much chasing this one was liberated from the house back outside.
Specimen 3. This one in OUR BEDROOM, after he lost it and got bored tring to re-find it.
This one camped out in the space behind a radiator, popping out to try and escape. Unsuccesfully in the end.

There has been much debate on the variety of rodent this might be too.