Dog guard

[GuyB]

Has anyone found a dog guard that works well in the Cali? We have a 40kg Ridgey who rides on the bed extension in the back but is quite capable of coming over the seats in an emergency (or if left and bored!). At the moment we have one we brought from our old car which clips on the headrest posts - problem is these aren't vertical so the hooks slip down and the guard slips after a day or two....

Any ideas? Missus is extremely car proud (ex motor trade) so can't look crap!

Guy.