Do you reckon you can tell how Barney the Blue Peter dog is feeling?
It's pretty obvious that presenter Helen is very happy here, and most of you would probably say Barney looks happy too.
Dog owners say they know what their beloved pooches are thinking just by looking at them, and now for the first time some scientists agree.
New research suggests that people can tell how a dog is feeling because dogs and humans have evolved together.
The researchers took several pictures of a dog, all with different facial expressions.
They then asked 50 volunteers to decide whether they thought the dog was sad, happy, angry, scared, or even surprised or feeling guilty.
Almost everybody got most of the emotions right.