Remember that article I wrote about using positive reinforcement to change behavior when dealing with aggression? Well, obviously the scenario in it was hypothetical (the part about the snakes). That's not to say that it won't work, because it definitely would. However, since it was hypothetical I wanted to give you a real story using classical conditioning with a semi-feral cat.
I saw this article yesterday and just had to write something about it since obese dogs are one of my biggest pet peeves. About 20 years ago when I graduated from school my very first client had a huge German Shepherd. When I say huge, I mean *huge*. He weighed over 120#. When I'd take him out to train him people were impressed with his size & say "wow, how much does he weigh?", as if it were a good thing. My response to them was always "thirty pounds more than he should."
One of the calls I get most often is about dogs that are leash reactive and dog aggressive. This could mean they make noise, bark & lunge because they are happy to see the dog or person approaching, or it could mean they are not so happy to see what's coming towards them or behind a fence they are walking past. Sometimes the dogs themselves are conflicted and don't know what they want. Either way, it can be nerve wracking for both the person handling the dog as well as the subject at which the dog is reacting.
The following is about a young, large breed dog who was playing roughly and becoming aggressive with another dog in the household. This is how we fixed it. As an update, the two are playing great together and the larger, younger dog won't even be outside without a toy in his mouth now.