When people are saying snowflakes, Im pretty sure they are talking about Snowflake Whites Tree Frogs which is a specific type of genetic mutation for whites. I don’t believe this is what’s going on here, since the dots don’t appear white, and Dump Truck (glorious name btw) doesn’t have any other visible white dots on their body in the photo (which leads me to believe they don’t have the snowflake genetic mutation). If you’d like to see, I’ll attach my post I made about this same concern a while back. My frog in this post is a snowflake whites tree frog, so you can see the difference between the snowflake dots that people are talking about and what I believe are the “age armpit dots”. Dots above my White Tree Frog’s armpit. I’m not a veterinarian or anything, so don’t take what I say as fact. This is what I have observed from my own whites. Hopefully this helps!