Dog Heaven (1927)

Poor Pete the Pup. He wants to hang himself because his master, Joe, has given up playing with him and going fishing for the love of a girl. A dog friend of Pete's stops him in the nick of time, and in flashback Pete tells him of his sorrows; Pete becomes a drunkard and is chased away by Joe. The last straw comes when another dog knocks Joe's sweetheart into a lake and Pete is blamed for it. Will Pete carry through with his suicide or will Joe apologize?