No, he’s mistaken. This is stylized—beautifully so—but it represents accurately the way a horse canters or gallops. The sequence of footfalls is right hind, left hind, right fore, left fore (on the left lead gallop). That is exactly what this sculpture shows. Dogs don’t move like that because their spines are more supple; with each stride they bend more deeply than horses and put their front paws between their back legs, then stretch out again like a bent bow springing straight.
Not just that, but the horse was central to these people’s lives and their culture. They loved their dogs, but they idolized their horses.
You’ve never watched a Wolfhound doing a double extention gallop have you? It could well be a hound, but I do think it is a horse.
The neck is too long for a dog, plus, all Sight Hounds [which Wolf Hounds and Greyhounds are] have *double flexion* spines.
There would be an arch in the spine that no horse could achieve.
It’s a horse, not a dog.
[The ‘expert’, however, ~may~ be a jackass]...:)