Sleeping Powder Files (Hank the Cowdog #80) by John R. Erickson

No self-respecting Head of Ranch Security would be caught dead sleeping on the job ...so when Slim catches Hank asleep, not once but TWICE, Hank knows something sinister is afoot. And, if that's the case, then odds are that Pete the Barncat is involved. later that day, the case takes an interesting twist when Hank learns that Pete has been missing for two days!