This is a free-to-use fictional picture of a deer licking (cleaning) a domestic cat in a pretty garden surrounded by colourful flowers. Despite being a fantasy image, it is very much based in the real world. Wild deer can and do make impromptu friends with domestic cats who are allowed outside unsupervised in the countryside in the US.
I have seen genuine photos and videos of these sorts of temporary, interspecies friendships which are very touching. There is nothing better than a good interspecies relationship as it educates humankind on how different races of human can and should get along in peace and harmony. Sadly, the opposite happens all too often with bloodshed and misery.

There are many articles on interspecies relationships on this website. If they interest you, please click on the link below to see a list:
As a little reminder of the obvious, by far the most common interspecies relationship/friendship is that between humans and cats and/or dogs.
The next most common is probably the very common friendship between cats and dogs. There are so many classic family homes where there is a cat and dog who are best friends; one supporting the other.