I have a 5 door dynamic, a working Slovakian Rough Haired Pointer and a Korthals Griffon (both about the size of a slender labrador). They do both fit in - just ! I discounted the Lintran type of crate as they actually end up with even less space and it's a pain to remove and store when I need the boot. My solution was an OEM boot liner, neither breed sheds hair but both are always covered in mud and/or water (the liner is very good quality and well worth it) and a tailgate guard from
http://www.dogcages.uk.com which is custom made to fit, takes 5 minutes,doesn't rattle at all, stops the dogs leaping out as the powered tailgate opens and importantly can be left in situ so you still have access to the full boot area when you need it. I modded the back seat guard (halfords I think) that used to clamp to the rear headrest posts in my Discovery to fit the Evoque instead, and bob's your uncle ! I really highly recommend the Guardsman tailgate guards, they are robust, very well made and designed to take up as little of the boot space as possible. Make sure you get the bigger mesh (2" I think) and you can still see out of the back window ! As an aside Guardsman actually make the OEM Evoque rear seat dog guard under licence for JLR and as such unfortunately aren't allowed to sell you one direct (and cheaper obviously) - hence the cut down Halfords one !