At 10 Downing Street in England, Larry the cat is the official mouser. Although David Cameron is leaving as prime minister, Theresa May is taking over but Larry the cat still remains.
Unfortunately, the Foreign Office has its own official mouser named Palmerston. What makes matters even worse is that Larry the cat doesn’t like Palmerston in the Foreign Office. If you thought politicians in different agencies can’t get along, you haven’t seen a real cat battle between two official mousers of the British government.
Perhaps Larry wanted Britain to remain in the European Union but Palmerston wanted Britain to leave. That would explain the animosity between the two cats.