In a 2021 interview, Havertz mentioned that he grew up in a dog-friendly home in Germany. He said he grew up surrounded by dogs and had a great bond to them. Havertz stated that having dogs around gave him peace and joy, even as his football career took off.

When Havertz moved to London to play for Chelsea, one of the first things he did was get his own dog. He has been sighted strolling his golden retriever through his London neighbourhood. Havertz has posted images of his dog on his social media pages, demonstrating their strong relationship.

In addition to having a dog, Havertz has supported animal welfare charities. He has helped organisations that rescue and rehome stray dogs, raising awareness and cash for their vital work.

Havertz credits his relationship with dogs for helping him achieve balance and stress relief from the pressures of professional football. He has stated that spending time with his pet dog allows him to unwind and recharge when he is not on the pitch.

Overall, Kai Havertz looks to have a genuine and long-standing affection for dogs. It gives him peace, joy, and a sense of belonging amidst the frantic lifestyle of a professional football player.