A man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Answer: The river was frozen.

More Difficult Riddles with answers

More Difficult Riddles

A man had a bar of lead that weighed 40 lbs., and he divided it into four pieces in such a way as to allow him to weigh any number of pounds from one to forty. What are the weights of the four pieces?
A man has nine children, born at regular intervals. The sum of their squares of their ages is equal to the square of his own age. What are the ages of the children?
A man is pushing his car along the road when he comes to a hotel. He shouts, "I'm bankrupt!" Why?
A man parks his car outside of a hotel and immediately realises he is bankrupt. How did it happen?
A man phoned his daughter to ask her to buy a few things he needed for a trip. He told her she would find enough dollar bills for the purchase in an envolope on his desk. She found the note with 98 written on it. In the store she bought $90 dollars worth of things, but when it was time to pay she not only did have $8 left over but she was short. By how much and why?
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
A man told his son that he would give him $1000 if he could accomplish the following task. The father gave his son ten envelopes and a thousand dollars, all in one dollar bills. He told his son, "Place the money in the envelopes in such a manner that no matter what number of dollars I ask for, you can give me one or more of the envelopes, containing the exact amount I asked for without having to open any of the envelopes. If you can do this, you will keep the $1000." When the father asked for a sum of money, the son was able to give him envelopes containing the exact amount of money asked for. How did the son distribute the money among the ten envelopes?
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
A mighty weapon in the war against winged household pests.
A morbidly-named body of water
A mother had five boys Marco, Tucker, Webster and Thomas. Was the fifth boys name Frank, Evan or Alex?
A precious fluid, thicker than water.