I saved and washed out the bottle after the course was completed and worked on holding it close to his ear in exchange for a treat. Then I held it closer, for longer, and so on... then I filled the bottle with olive oil to drop in his ear.
He is now quite happy to have a drop of olive oil in his ear, though obviously doesn't particularly enjoy the experience as he shakes his head straight after and often rubs his head on the ground. I'll continue with this, but now I'm really working on my technique - getting the drops right down the ear canal, and giving it a rub before he can shake them straight out.
The difference between attempting to make a dog like Jasper submit to something he doesn't like and effectively giving him a choice (and making him want to make the right choice) is profound - anyone who witnessed our attempts at the former would find it hard to believe he was the same dog
