The illusion has gone viral across social media, and feaures two cartoon faces. So, what colour do you think the faces are?

Let your dog watch you grab a treat, place it in your open hand and then close your hand into a fist around it. Present your closed hand in front of your dog. Your dog may sniff your hand or lick it.

Instagram offers a handy feature that lets you download Reels and save them directly on your smartphone. The update comes as a major departure from the old system where users could only save/bookmark ...