Lost in Space

There is a muted barking coming from some where in the house.

Is Trotter in the hallway barking at the cat litter tray?

No.

Is he in the kitchen barking at the washing machine?

No.

He isn't upstairs barking at Tutz, despite it being one of his favourite past times. He isnt on the landing barking at Martha's bedroom door. He isn't in the sitting room barking at the fan, and he isn't in his pig-pen barking at the air.

No.

Poor Trotter has accidentally locked himself in the bathroom and is barking at the door because he can't understand why he cant get back out again.

Poor Trotter