The question Why was Jabba immune to Luke's powers of the Force in Return of the Jedi? posits that Jedi Mind Tricks do not work on Jabba because he is strong willed.
This makes a good deal of sense, especially given Ben's quote.
BEN: The Force can have a strong influence on the weak-minded. You will find it a powerful ally.
In the movies, we also meet Watto who claims to be immune to mind tricks. His quote makes it sound like his entire species is immune, and not just him.
WATTO : No, they won'ta. What you think you're some kinda Jedi, waving your hand around like that? I'm a Toydarian. Mind tricks don'ta work on me-only money. No money, no parts! No deal! And no one else has a T-14 hyperdrive, I promise you that.
Similar to the Hutts, Toydarian brains have an unusual composition which made them immune to influence from the Force.
Although not common, Hutts were able to be Force-sensitive.
If one is Force-sensitive, they must be able to be influenced by the Force at some level.
So what gives?
Is there any evidence that other Hutts are, or are not, susceptible to Jedi Mind Tricks? Is there a biological component that only the Toydarian entry references, for some reason?