July 2, 2025, 1:41 pm | Read time: 3 minutes
Dogs are much more sensitive to high temperatures than humans. As a result, many dog owners underestimate the risks of training their pets in the summer. In an interview, dog trainer Katharina Marioth explains at what temperatures it becomes critical and how to successfully train with your four-legged friend despite the heat.
Unlike humans, our dogs can only cool down by panting. High temperatures affect them much more quickly, which many dog owners underestimate. However, dogs still need to be engaged in the summer. And those working on behavioral issues want to continue training in the summer to avoid setbacks. PETBOOK asked dog trainer Katharina Marioth what to watch out for and when it becomes critical.
“Water is a Must–Even at 68 Degrees Fahrenheit”
PETBOOK: Katharina, when is it too hot for dog training in the summer?
Katharina Marioth: “It largely depends on the dog’s age. For puppies and seniors, I find temperatures from 68 to 72 degrees Fahrenheit critical. Generally, at 68 degrees in the shade, you should pay closer attention, especially regarding the training content.”
What should I always have with me in warm weather?
“Water is a must–even at 68 degrees. A small bottle, like baby water bottles that fit in any pocket, is enough. I also keep butter cookies in the car–not as a snack, but as an emergency energy source. They don’t melt and provide quick carbohydrates.”
Running Beside the Bike–Animal Welfare Concerns in Heat
What should you consider about the ground surface?
“It’s not just the air temperature that matters–asphalt can quickly heat up to 122–140 degrees Fahrenheit. My tip: Place the back of your hand on the ground for five seconds. If it’s uncomfortable, it’s definitely too hot for a dog’s paws. Such temperatures can cause serious burns.”
What exercises are still suitable in warm weather?
“Light tricks like weaving through legs or jumping over a log are good. Nose work also works well. What I absolutely oppose is running long distances beside a bike–I consider it an animal welfare issue. Very useful in the heat are position exercises in the shade. ‘Down,’ ‘Stay,’ short distance exercises–they are mentally challenging without straining the body.”
Many go to the lake for dog training in the summer. What should I be aware of?
“At 68 degrees water temperature, blue-green algae can form–and they are deadly for dogs even in small concentrations. You usually can’t see or smell them. Therefore, always check the current water quality with local authorities. Regarding wet dogs: After swimming, the body is already stressed. Further training can cause circulatory problems. Better: enjoy quiet moments together and strengthen the bond.”
Also interesting: 12 Tips for Helping Dogs Get Through the Summer
Heatstroke in dogs in the car – the underestimated danger
Editor: ‘My best tips for walking dogs in high temperatures’
Why air conditioners and fans are dangerous for dogs and cats
How to Tell if Your Dog Is Overheating
These warning signs indicate that it’s too hot for your dog to train in the summer:
- Heavy panting
- Sudden loss of leash control, usually the dog pulls into the shade
- Lying down in the middle of a walk
- Pale mucous membranes (best checked on the gums)
Important: Never pour cold water over the dog! Instead, slowly cool with lukewarm, damp towels from the paws to the body center.
Katharina Marioth’s conclusion: “In summer, less is more. Prefer small, shady exercises or just relax together.”
You can watch the full interview in the video.
About the Expert
Katharina Marioth is the founder of the Stadthundetraining brand and the KEML principle. She is a certified dog trainer and behavioral assessor for dangerous dogs in Berlin. In her daily work, she collaborates closely with veterinarians, scientists, and other specialists on dog-related topics. With her knowledge and skills, she secured the title of Dog Trainer of the Year 2023 on the Sat.1 show “The Dog Trainer Champion.”