Perhaps Ranger's instinct is being overwhelmed by a severe case of BCHADD brought on by a traumatic puppy hood? (Falling out of a truck on a freeway then abandoned at the vet could cause permanent emotional scars).
What is BCADD? Border Collie Herding Attention Deficit Disorder
Border Collie's with BCHADD have trouble paying attention & controlling impulsive behaviors. (Wait, doesn't that describe ALL border collies?)
A Border Collie with with this disorder may have some or all of the following symptoms:
-Difficulty paying attention to sheep
-Easily distracted by irrelevant stimuli, i.e. sheep sh*t
-Inability to sustain attention ("Another dog? There is another dog over there! HIYA!")
-Difficulty performing tasks that require concentration (flakes out when pressured)
-Frequent shifts from one uncompleted activity to another ("What is that? Birds?")
-Procrastination ("MOM! HI! I HAVE MISSED YOU FOR SO LONG!")
-Disorganized work habits ("Gonna go this way...or that way, or this way...'doh what was I doing again?")
-Failure to complete tasks ("LOOK DAD! LAMBS! Lambs running in that field!")
-Inappropriate social behavior
It isn't all bad news, often these same border collies can pull it together with the proper help and stimulation.
Provide consistent routine & structure
Give clear boundaries and expectations
Encourage and keep it fun
Reinforce positive behaviors verbally & physically.
Negatively reinforcing bad behavior by allowing appropriate consequences to occur naturally (If you bite the sheep, you don't get to play with the sheep)
Watch for moments to redirect if distracted
Praise and encourage often! Be ready to catch good behavior and reward it
Keep your training sessions short and always end on a good note