It's the largest land mammal that's native to the islands, but it's about the size of a Chihuahua, making the island fox one of the smallest members of the dog family candidate.
Bovids, equids and, in particular, canids, were put to work by H.sapiens; felids always took a slightly different view of the matter, but were indulged for their rodent-catching talents.
Not only can canines understand our emotions and body language, but when dogs and humans interact, both our bodies release oxytocin; a hormone commonly associated with feelings of love and protectiveness.
If anything, dogs resemble juvenile rather than fully adult canids, a sort of arrested development which accounts for the way they remain dependent on their human owners throughout their lives.
The film was also criticized for its inaccurate portrayal of the canine creatures, even though it offers some narrative reasons on why they are more violent than usual.