I've spent several hours on several days trying to get a decent Rune Beetle. It's even made me convert this script a bit (on my version) so that it looks at Barding Difficulty and if it's below a certain number (113 for runes) then it puts my pet on the target to kill it.
It got me thinking about a selection process where you could enter the stats you want (minimums) and it would kill off any that didn't meet the criteria.
The only thing holding me back is that I have more projects in mind then I have time

This is the Rune Beetle I got last night:
Rune Beetle
Hit Points: 360
Str/Dex/Int: 421 / 168 / 386
Resists: 64 / 42 / 45 / 94 / 40
Skills:
Wrestling: 63.5
Tactics: 80.1
Resist: 97.2
Anatomy: 0
Healing: 0
Poisoning: 123.3
Magery: 99
Eval Int: 108.1
Meditation: 86.8
I'm not sure if they are like Greater Dragons in that skills can be trained up to a % of what they were when they were tamed, or if they are "stuck" at what they are after taming.
*BTW: I realize this Rune Beetle isn't the greatest for PvM, the resists aren't high enough. This is a PvP Beetle so my concerns were more about Hit Points, Dex, Poisoning, Eval. With that in mind it's a vicious PvP Beetle:
Hits = 360/360 100%
Dex = 168/170 98% (two off max)
Poisoning = 123.3/126 98%
Eval = 108.1/112.5 96%