Scratch, why?

Carst is scratching...
We think this is because of some kind of irritation due to a preparation against ticks and fleas.
We always used a flea/tick collar named "Scalibor" and were satisfied but we noticed the working grade was not so good as a few years ago. Maybe the ticks became a bit resistent, and: when children grab the collar it's not so good....it's chemical.

So we switched over to "Advantix" which is an oinment that has to be applied on his back a few times a year.
But after each treatment (we used this four times now and we apply it a bit less often as the manufacturer says).

Maybe he'll get used to it? I hope so.

Here in LARGE....