on guard

This is Jacks, one of our rescued dogs.
She's not the sharpest knife in the draw but is very loyal and has taken it upon herself to make sure no one messes with Algernon the Snowman.
Dash, who we'll meet later however, has taken him as a personal insult and spends all day barking at the poor man. Couldn't get a decent picture though as my hands were shaking with the laughter.