What would be good alternatives that could replace the word "confuse" in this context?

Rebecca

In this case, "confused" has been used to mean that mandrills are often mistaken for or mixed up with baboons, as they look quite similar. Thus, you can use "mistaken [for]" or "mixed up with" as alternatives to "confused" here. Ex: Even heavier than baboons, with which they are often mistaken for. Ex: Even heavier than baboons, which they are often mixed up with.