While the popular meme declares "all dogs are puppies," implying our love ignores age, a recent study reveals humans find puppies most attractive at about eight weeks—the exact time mothers wean them, heightening their vulnerability.
Intrigued by a possible connection between weaning and this peak appeal, the researcher designed an experiment to test the hypothesis.
The study featured 51 participants rating photos of puppies from birth through young adulthood in three distinct breeds: Jack Russell Terriers, Cane Corsos, and White Shepherds. Ratings were lowest at birth, peaked before 10 weeks, then declined and leveled off.
Cane Corsos hit maximum attractiveness at 6.3 weeks; Jack Russell Terriers at 7.7 weeks; and White Shepherds at 8.3 weeks.