1. Have you ever overpayed for mass-hoard pets or just a hoard pet in general?
My hummingbird bwolves, oh.my.gosh.
The first days after the first outcome grew, I overpayed massively for them. Rares were involved.
I also pay '09 rares for my jelly ponies occasionally.
2. Have you ever unintentionally hoarded something?

I only wanted one, but that day I got gifted eight ones by eight different users, so I kept them all x3
They aren't in a hoard group or labeled a hoard, but well, they pretty much are one xD
3. What is the hoard pet you found was the most difficult to trade for/obtain?
My first few jelly ponies were tough to get.
I only started hoarding them after the ETP changed their linearts, so a lot of people were looking for them as well.
They got easier to find later, though. By now they're fairly common in paperclip groups and the like, so the only real challenge is having something to offer that the person is interested in xD
Other than that, most of my hoardies were fairly easy to obtain.
One could argue that Vixens and UR Butterbuns are harder to find because they're rare, but I was never forced to overpay for one dramatically.
Although it is true that I recently lost an auction for one despite offering a Red Dragon xD Times change, I guess xD
My hummingbird bwolves, oh.my.gosh.
The first days after the first outcome grew, I overpayed massively for them. Rares were involved.
I also pay '09 rares for my jelly ponies occasionally.
2. Have you ever unintentionally hoarded something?

I only wanted one, but that day I got gifted eight ones by eight different users, so I kept them all x3
They aren't in a hoard group or labeled a hoard, but well, they pretty much are one xD
3. What is the hoard pet you found was the most difficult to trade for/obtain?
My first few jelly ponies were tough to get.
I only started hoarding them after the ETP changed their linearts, so a lot of people were looking for them as well.
They got easier to find later, though. By now they're fairly common in paperclip groups and the like, so the only real challenge is having something to offer that the person is interested in xD
Other than that, most of my hoardies were fairly easy to obtain.
One could argue that Vixens and UR Butterbuns are harder to find because they're rare, but I was never forced to overpay for one dramatically.
Although it is true that I recently lost an auction for one despite offering a Red Dragon xD Times change, I guess xD