Canis Lupus; Grey Wolf. The genetic basis of all canids on the planet.
A male wolf can mate with a female domestic dog, and she'll give birth. Which is why Halfbreeds are popular in the US; the mating of a Wolf to a Husky. PROTIP: The Alaskan Malamute is the only breed of dog that is as genetically near as dammit to the Wolf, as to be all but indistinguishable, except by experts.
The Red Fox is a canid. A descendent of the Grey Wolf. Canis Lupus cannot breed with Vulpes Vulpes, due to Genetic Incompatibility.
...yet, they are both of the same 'Kind', according to the Bible. So either (check one)
[ ] Your 'God' isn't as 'Omniscient' as he makes out to be, otherwise he'd have rectified that slight biological deficiency that we mere mortals know about, certainly since messrs. Watson & Crick's Nobel Prize-winning discovery. Therefore he isn't God, ergo he doesn't exist.
[ ] The Bible was written by Bronze Age goatfuckers with ideas above their stations, because a 'God' would have 'inspired' them about that 'micro-literary'/doctrinal gap, re/ 'Kinds', and not a 'God', because - unlike the Creation-annihilating Labradoodle, from 1988 AD - he doesn't exist.
Choose wisely, and next question.
@Mister Spak
Also, Mudskippers.
(*Tumbleweed rolls by; Coyote - not a Wolf 'Kind', again, due to Genetic Incompatibility - howls in distance*)