Today we received this adorable photo plus this message from the National Zoo: “At six weeks old, the Smithsonian’s National Zoo’s two fishing cat (Prionailurus viverrinus) kittens, a male and female, received a clean bill of health from zoo veterinarians June 29. The veterinary team performed a complete physical exam, which includes: listening to the kittens’ heart and lungs; checking their mouths, eyes, legs, feet, and genital area; and feeling their bellies. The kittens also received the first of a series of vaccines that protect against feline distemper and some upper respiratory viruses. The kittens’ birth marked an important milestone: This is the first time fishing cats have successfully bred and produced young at the National Zoo.”

As promised in our earlier piece on baby animals at the zoo, we will keep you updated on all developments in this department of cuteness.