From Jak and Daxter Wiki

An Ottsel is a creature combination of an Otter and a Weasel. They have Redish-Orange fur with goldish bellies and are those seen in the series are even capable of speech. Although the Precursors are in fact ottsels, it is unknown if all ottsels are Precursors.

It seems that Ottsels, the way they are spoken of, could also just in fact be wild creatures as well. However, it would make little sense if only some ottsels are Precursors and others are not, but it is possible that the Precursors created a subspecies of ottsel to cover the fact that they were the very rats themselves. This would explain the difference between the Precursor Ottsels and Daxter, Tess, and Count Veger. They could also be regular animals turned into Ottsels by Eco, like Daxter. If so, they would also have their original level of inteligence, also similar to Daxter's case.

[edit] Dark Eco

In The Lost Frontier Daxter once again comes into contact with Dark Eco, however, instead of killing him as usual he gains Dark powers just like Jak did. It's unknown if this is because he's an Ottsel/Precursor or because he turned into an Ottsel in the first place by falling into Dark Eco.

[edit] Notable Ottsels

Daxter

Ottsel Leader

Ottsel Dummy

Surfer Ottsel

Count Veger

Tess

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