"Desperate dogs jump over walls" literally means that a dog, when cornered, will jump over a wall to escape. It is used metaphorically to describe people who, when they have no way out, recklessly take desperate risks. This idiom comes from A Dream of Red Mansions, where it is used to describe crazy actions taken by people in desperate situations. It carries a derogatory connotation and is usually used to criticize or warn those who resort to extreme measures because they are pushed into a corner. Its deeper meaning lies in revealing a psychological state: when people feel they have no way back, they may lose their reason and do dangerous things they would not normally dare to do. It is often used in descriptions of extreme reactions in crime, conflict, or competition, for example, "After being surrounded by the police, the criminals were driven to desperate measures and fired shots to resist arrest." In terms of cultural background, it reflects Chinese folk observations of dogs' behavior and extends them to human nature. Emotionally, it contains both condemnation of the actor and a certain understanding of their situation—after all, they were pushed to the brink. Overall, however, this idiom emphasizes the recklessness and disregard for consequences of the action, reminding people not to push others into a corner and also warning themselves to avoid falling into such a state.
📝 Example
1. When the thief was cornered in a dead end, he became like a desperate dog jumping over a wall—he actually pulled out a knife and threatened passersby. (A metaphor for resorting to reckless resistance when there is no way out.)
2. When the company was on the verge of bankruptcy, he became like a desperate dog jumping over a wall—he embezzled public funds to gamble and ended up in prison. (A metaphor for taking extreme and foolish actions in a hopeless situation.)