as far as "elves" & "dwarves" they absolutely exist in ps, just look up races on ps main page.
As far as cats & bears, while they don't exist yet, in game they may be historical or mythical or such, otherwise, yes woth removing from in-game books... i suppose...
The Rats of yliakkum while at first i'd think it could be a good point [or funny guildname]...
rat (rt)
n.
1.
a. Any of various long-tailed rodents resembling mice but larger, especially one of the genus Rattus.
... Similar to how anyone with certain physical traits is a dwarf...
Just because something exists in reality, doesn't mean it can't exist in planeshift. Many things should. The basic principle is that as many things as possible would be nicer if kept original... to that end why not start with player names, and try to as well with noncombattant npc names, and so on. Might bug me a bit too to be censored in names etc, but to complain seems like wanting to change the name you were born with-- in which you had 0 choice... I would presume...