Guys a lot of people are saying that these things are super common. To put it into perspective for around every 12 foundations snapped together so like a base there will be one rhynio. Please be careful they are aggressive. I would say super aggressive not hyper but super. I was watching one kill two trikes and it went over to me to kill me. And it had both trikes alive. Very common and super aggressive, and what I would call hyper leathal. I had like 360 health and I would get one shotted. These things are beast. I hope you all can tame one since very few people have em right now.