by http://www.buginfo.com/rats/rats1.cfm
http://www.buginfo.com/rats/rats2.cfm
http://www.buginfo.com/rats/rats3.cfm
"Rodent" means "gnawing teeth" Never occured to me.
Though rat-control pages, there are some interesting things
in there. I'm researching my rat article for our group's
newsletter and came across these.