Additional:
I think that it is important to know that my two dogs are a dachshund and a jack russel and I thus in my Jimny the back seat did not expand, but use the remaining space behind the rear seat. So I can assure the guard dogs in addition to a responder on the headrests.
For larger dogs, this variant of the installation is not suitable.
Please forgive me if the first review was misunderstood.