This is going to sound insane to ask, but, are mudcrabs mentioned in dialogue anywhere in Morrowind? If so, who talks about them and where can I find the person? Bonus points if you can tell me what they say, but it's not necessary.

Gudling the Rascal, a nord hunter in St.Veloth's hostel in Molag Mar talks about almost all creatures of Vvanderfell. Just talk to him about 'my trade' and see the wealth of knowledge that you get.

The initial Redoran quest-giver also mentions Mudcrabs during one of the quests she hands out. She also gives an explination as to why Mudcrabs can be aggressive.