It’s hard not to sympathise with this confused Jack Russell terrier who just can’t fathom how to get through its dog-flap.

Video footage, above, has emerged of the dog making repeated futile attempts to go through but it doesn’t appear to realise the reason he can’t do it is because of the large stick in its mouth.

The video was filmed in Pittsburgh, US.

"I got a Jack Russell because they are supposed to be an intelligent breed", the equally baffled filmer later wrote online.

Video credit: Newsflare