Larry clearly takes no prisoners as the iconic No. 10 cat was filmed scrapping with a fox before chasing the intruder out of Downing Street.
The 15-year-old Chief Mouser stood his ground as the feral visitor got a little too close on Monday.
Long-suffering Larry - trusted companion for Prime Ministers David Cameron, Theresa May, Boris Johnson and Liz Truss - is always on his guard with other animals often on his turf.