Imagine Sherlock finding a little kitten on a case. He takes the kitten after Lestrade finishes arresting its owner for three counts of murder. John wasn't on this case and is startled to come home to a consulting detective sitting on his chair, feet pulled up with him, a tiny grey kitten on his knee. He certainly didn't expect the deep, solemn voice of his flat mate announcing "His name is Schrodinger and I'm keeping him."
OH MY GOD okay this first of all warms my entire soul, I just got a puppy and honestly having a tiny animal in the house to care for is the best thing ever and I feel that both John and Sherlock are not above feeling this exact way about kittens! ALSO: this made me think of the fic Colors by Quesarasara!! AMAZING fic but also the cat situation in that (don’t wanna spoil it for anyone who hasn’t read!)