At first I used Kruskal-Wallis to compare the effect of species on number of larvae recovered, and wasn't sure how to deal with dose levels so I just compared mice within each (more on this later). Since sample size is low and the data aren't particularly normal, I stayed away from ANOVA. But thinking about it in more detail--I AM dealing with count data (number of larvae, bounded at zero of course) as my DV and I'm not entirely sure if K-W is suitable for this?

Looking into it more, it seems that a lot of people use Poisson regression for counts data. This might also help me get around my dose grouping problem as I can include dose as a co-variate in the glm object in R... right? There are also quite a few zeros in the data at the low dose especially.

Which would be more suitable here? Do I have any more options? I don't love going into regression since I really lack any sort of formal background in it and my interpretation is based entirely off of self-teaching. Thanks in advance!!