Mavis is a Jack Russell terrier puppy, described by her owner Jennifer as “equal parts sweet and devious”. The little dog takes Jennifer’s keys and tries to bury it in the garden mulch, seemingly oblivious of her owner who is looking on. When Jennifer says Mavis’ name, the puppy looks up guiltily. Jennifer takes back her keys from Mavis, hopefully to put them somewhere safe! Credit: YouTube/Jennifer Janisch