Sleeping on the job

Doggone hoomans left me alone again this morning. Mom had an appointment and Pawpa drove her. They shut all the windows I could reach because they wanted no repeat of the time they came home to find a ripped screen and the neighbor bringing me home in disgrace. Mom left a window "cracked" a half inch the other day and when I just tried to get close enough for a sniff or two, some stuff she had on the chest under the window fell on the floor. The jig was up when she saw that. I think that's why they snuck up to the door when they got home. They were trying to catch me! I usually start barkin' when I hear the car door shut (or an acorn bounce off the roof, or a doorbell on TV) but somehow I must have missed it. Mom said I was not warning off intruders in their absence and probably sleeping on the job.... GRRRRRR.