Vets are warning against a new

Vets are warning against a new trend that sees dog owners barking back at their pooches and filming their reaction.

This is known as the #barkatyourdog challenge, and videos listed under that hashtag currently have nearly 160 million views.

Some of the pups taking part respond by staring at their owner in shock, but others can be seen giving a ferocious growl, warning them to back off. 

Veterinary Nurse Shauna Spooner, from the charity PDSA, has slammed the trend, saying it could have ‘dangerous