From the blog "The Adventures of Cato, Tara and Jasmine"

Tara: Monster!  Monster!  I saw it!  I saw it first!!!  Monster!!!!   Cato: We just found a Monster!  It was very exciting.  The back door was open, cos of the hotness, and we went out for a patrol, and we saw it, flapping dangerously round the garden under the table!  So we barked and barked til Mum came to investigerate.  We would have got it, of course, only she came too quickly. It was a Monstrous plastic bag!!!  Flap! Flap! I have to keep going out and checking