When I work from home, he goes for a walk at 4:00pm and he's nudging me at exactly 4:00. When i have to go in to town, I tell him the night before "I have to go in tomorrow" and he wakes me up at exactly 4:30am by licking my face to go for his walk before work.
No need for an alarm clock. If I could only teach him to read a tide chart, I'd be all set.
"We do not inherit the earth from our ancestors, we borrow it from our children"