The snails were left behind in a Budapest hotel room, while 10,000 dollars in cash was found hidden in a US hotel, News.com.au reported.
Hotel staff in Washington, US, were startled to discover a live snake in a room.
Then there was the man who left his wife behind in Prague, and just as bad: a guest who forgot his mother was with him and left without her.
According to a survey by lastminute.com of 500 hotels around the world, a dog was left behind by its owner in Milan, a wedding dress was forgotten in New York and a police officer left his gun and badge in a Las Vegas hotel room.
The hotel booking company found mobile phones, passports, toothbrushes and house keys were the most common items left behind by guests.