I joined in 2015 but the first time I got a rare pet from the pound was this year. It's entirely because of those pound timer discord bots. I owe them everything. Thank you to whomever made them, now I actually have a chance at getting some decent pets without waiting for Holibombs/Secret Santa/quitting giveaways.
I also got a few regular VRs and two rare warriors but this guy is the most valuable pound pet I got so far.
I got one of the store horses too, still my most valuable catch: It was funny because I already had the horse, so I traded my other one to get the missing draft horse. My favorites have to be all my pound cats: accounts/viewgroup.php?userid=245926&groupid=6070715 I wanted a species hoard and I decided to get them exclusively from the pound.
This lion (which I have since gifted to my friend which is why it is no longer on my account) was by far my best pound catch. I also got this cat which was pretty cool too. :)