* Voicing an entire flock of birds, in a single take.
* Welker once appeared on ''[[OneSaturdayMorning Manny The Uncanny]]'' and did a capuchin monkey distress call. [[http://www.youtube.com/watch?v=Jq48dhbWfIQ#t=0m39s And he got a reaction from actual capuchin monkeys.]] ''That's'' how good the guy is.
* The sheer ''amount'' of roles that Frank's done (a lot of which are animal walla/animal sound effects that sound just like the real thing) is quite an impressive feat.