Looking for a dog guard

[EWO]

I am looking for a suitable/recommended dog guard to fit my Mazda2 TS2. Mazda dealers do not seem to stock an 'official' type and my internet searches have found only guards which were made to fit the old model 2. Does anyone have a dog guard fitted to their new 2? If so, what make/size is it and could you advise where to get one from please? I would need something substantial in strength (fixed in securely rather than with extending pressure pads) as my dog is quite energetic and strong and would knock one down quite easily if not fitted well. I really want to prevent her doing this for obvious reasons. We don't have her often in the car as we have great walking countryside on our doorstep, but when we do we want to be safe. Any suggestions or advice would be much appreciated.
Happy New Year to everyone on the site. EWO.   

[AmandaR]

I will be watching out for any replies that you get, as I need to get one for the times I take my energetic springer spaniel out somewhere.

She would just over the back seats at any opportunity.

Amanda