Red Fox & Kits Nursing

Foxy has had me fooled. Babysitter? Female? Male? Mother..........this scene had me absolutely amazed. Now I am wondering about the OTHER fox in this equation. Perhaps I did not see a teat on that fox.....the other thought I have is that the other fox is also a female with kits. Are they cooperating? I only saw three kits at this point with Foxy. What happened to the fourth? Do the foxes have two locations where kits are kept? I've read coyotes will do this.....I hope this mystery will unravel!

Done