they can! some amphimorpho naturally glow in their basal forms due to bioluminescent markers incorporated into certain parts of their genomes (akin to the use of GFP as a reporter gene in biomolecular research!)...it's usually concentrated in their skin and inner body, but it wouldn't be a stretch for them to be able to make their fur glow as well! i think even amphimorpho without a natural glow could accomplish it with a bit of effort! ;3
as for how bright...i'm not sure! i'll leave that one up to y'all to decide based on preference!





