Cool canines have also found that wet towels, gel mats and damp clothes do the trick in a heatwave.
Here are some of the photos posted by pet owners on the Derbyshire TImes Facebook page.
9. Head start
How cute is this photo of Pip, a Jack Russell terrier, posted by Kirsty Berresford? Kirsty writes: "Cool, damp bandanna around her head and neck. She absolutely loves it and normally she hates bandannas and jackets." Photo: Kirsty Berresford
10. Becky Furness.jpg
Becky Furness writes: "Jessie loves her cool gel mat." Photo: Becky Furness
11. Splashing time
Jack Russell terriers Poppy, Bella and Dottie make a lunge for the pool in this photo posted by Debra Kay. Photo: Debra Kay
12.
Zena French writes: "Buster is keeping cool by wearing his cool vest and laying on his cool mat and keeping indoors in front of the fan - he knows how to chill." Photo: Zena French