(I initially asked this in one of the Chess Event, but realized that it was out of place and possibly not answered because of that. My apologies for the misdirection and/or repeated question)

Am I just completely misremembering or misunderstanding, but when Raiding With Leashes (the original) came out, wasn't there a restriction in place that the pets could only drop if 3 or more players were in the dungeon at the time? At the time, we only did weekly runs of Naxx, AQ, etc when we could drum up three people.

Now, with 5.3 and Raiding With Leashes II (The Re-Leashening?), my girlfriend and I got a couple of the new pets to drop .. and didn't even think about the fact there were only 2 of us until after the fact. We followed up by going to Naxx and Blackwing, where we got zero. I recognize it was just one run each of those two dungeons, but we couldn't help but think ... do you still need the three players for the pets in Raiding With Leashes? The second week, we also got zero pets in The Eye, Serpentshine and Kara, so is it possible that they allowed solo/duo groups to get the new pets in the first week, but now we need three players again?

I guess the TL;DR version is: Can we get the pets to drop for either/or/both achievements now? Or do we need to find a 3rd person again?