The zoos are also preparing for the upcoming hot weekend.
Animals that are more sensitive to heat, such as pandas, are drawn to caves or cold water when the temperature is high.
The Asian elephants shower with sand or dive into the water, the trunk then serves as a snorkel.
They drink up to 200 liters a day.
In the Leipzig Zoo, the elephants have already taken a cool bath, just like in Magdeburg, where they are showered more often than usual.
The keepers at the Magdeburg Zoo want to set up water spray systems for some animals such as snow leopards, tigers and lynxes, and in Landau in der Pfalz they are doing the same for the emus.
"We can also shower our parrots," said the head of the Bell Zoo in the Hunsrück on Friday.
"We spray water for our mini-pigs so that they can cool off in wallows." In Frankfurt, too, keepers prepared a soothing mud bath for the red river pigs with a cool jet of water.
The ring-tailed lemurs like the blazing sun
The tigers and cougars are cooled with some water on the concrete floor of their animal house.
According to the head of the zoo, the ring-tailed lemurs - prosimians of the island of Madagascar - are happy about the blazing sun: "They stretch their arms out towards you."
In the Dresden Zoo, the Humboldt penguins, which actually live on the coast of South America, have a cooling system in the water that cools the temperature of the pool down to 18 degrees.
Ice bombs, frozen snacks, are prepared by keepers in many zoos.
For tigers there is a frosty mixture of water and goat's blood.
The director of the zoo in Landau in the Palatinate reports on frozen and unsweetened fruit puree on sticks for the chimpanzees.
For the sea bear in Halle there should be a block of ice with frozen fish to cool down, the elephants get apples thrown into their paddling pool.
The herons present tasted the frozen fish for the penguins in Frankfurt.