Alolan Vulpix
Answers
I got one on my 14th or 15th hatch. 13a/15/10. What I've seen: against a hypothetical/mythical double dragon Dragonite Raid boss, level 30 Alolan Vulpix is identical to a level 30 Regice.***hatched 4 more this morning: Rat, cat, cat, cat. Appears I've hatched total of 12 Meowth and 380cp is the best 91% one other 379 14a/13/13
Vulpix was really rare and then they added Rattata to the mix, which surely didn't help.
I think I read somewhere that people had been counting their hatches and it was like 2-3% chance of getting a Vulpix.
No official research and probably not 100% accurate, but it shows just how difficult it is to get one.
I think I hatched like 20 eggs before I got an Alolan Vulpix. Might have hatched 5-6 eggs since then, but no more Vulpix.
I got extremely lucky and hatched a Vulpix in about my 5th egg. (a 70% IV Vulpix... #1stWorldPoGoProblems) 20+ eggs later, I still haven't hatched another.
Only 2 of the people I raid with regularly have hatched a Vulpix, and we're all at the stage now where we don't want any more Alolan eggs - they're just taking up valuable egg space where we could be getting more useful Pokémon - or hatching slightly more eggs and getting slightly more Stardust and XP.
(Once they put Ratatta into the Eggs I said "Screw it, I'm done with Alolan eggs. Don't care about getting high IV Alolans if I'm spending 7km to hatch a *bleeping* Ratatta. RATATTA.)