SMART DOGS TILT HEADS "Attention Pet Owners! This is Why Dogs Tilt Their Heads When You Talk to Them | "

"The results indicated that the gifted learners slanted their heads 43% of the time, whereas the other 33 canines completed the action only 2% of the time..."

https://www.natureworldnews.com/articles/48098/20211104/dogs-head-tilting-talk.htm