Nope...that's why I like working with them!!! It's cool to look at a big retic & see it sort "figure things out." Some of the BIIIIIIIIIG, aggressive boys/girls (typically girls, they get bigger) can be sort of intimidating if you're not used to each one's personality and mannerisms, but all in all, they're a challenging & rewarding species to work with. I'd take a retic or scrub over a Burm or Afrock any day.

K