An evil hedgehog is the star of a poster campaign aimed at warning revellers of the dangers of having their drinks spiked.
The campaign warns revellers to watch their drinks
Thames Valley Police have launched the new campaign after receiving up to two reports a week from people whose drinks in bars or clubs tasted stronger or weaker than usual, or had an abnormal effect on them.
Posters telling clubbers: "Don't let spike strike" are now being put up across the Reading and Wokingham areas.
The force says spiking a drink does not just mean adding a drug, it can also mean stronger alcohol being added without the drinker's knowledge.
Soft drinks can also be targeted, they said.
Thames Valley Police crime reduction adviser, John McNicholas, said: "Tens of thousands of people visit this police area in the evening to enjoy themselves in the hundreds of clubs, pubs, bars and restaurants.
"Our message to anyone having a drink, even at a private party, is not to leave it unattended."