Don asked the question in another thred if a dog killed the prey.

I have one dog (GSD) that doesn't chase animals unless they run in front of her. Yet she is very good in protection and ball drive.

A dog (GSD) I had in the past would run out of the house everyday looking for a bird or rabbit to chase or kill. She would just tare out everytime I opened the door. If she caught it she would kill it and start to eat it. From mice to birds to large rabbits. Yet although she did ok biteword really was kinda flat.

I assumed she had much more true prey drive (which didn't transfer to work) and the other dog described above had more of a play drive (which did transfer to work). Or would the difference be that the second dogs nerves were not as good and that would cause the difference. Her nerves were not as good.

What would this suggest about thier drives?

I would suggest serious electric collar training with this dog. Get a long line on it - and electrci collar on it set at the highest setting.

When the dog even looked at a rabitt you say nothing and shock it for 2 or 3 seconds. New dogs need to have a long line in case they panic and just flat run.

After the shock the handler says "IN A VERY HAPPY VOICE" - come here- come on owver here and pet the heck out of them when they come.

The key is to shock the dog when it looks at another animal - try and get a jump on the situation and hit the button with the timing of the look.

If you do it this way the dog will not know that the shock comes from you. If you shock at a low setting the dog can learn to BURN thorugh the shock and then you have big problems.

If you do this on your walks for a week the dog will see a rabitt an TURN HIS HEAD away - it will want nothing to do with it.

Yes a dog that chases other animals is doing it in prey drive - its a nasty habit to allow a dog to get into and an easy thing to change if it is done properly.