How big are Dhani in terms of poison source?

[Shyknyps]

The question occured to me when I began doing a self moderated thread in which I planned to milk my fangs and begin poison crafting.

But when I started reading over the Harvesting section of poison crafting it states that source size is a factor in how many doses can be extracted.

I was curious to know how many doses of venom a Dhani Viper can make a month based upon source size.

Tiny or Smaller Source - 1 dose Small Source - 2 doses Medium Source - 4 doses Large Source - 7 doses Huge or Larger Source - 11 doses

I would think a Dhani Viper would be a medium or large source. My personal thought is that they would be a medium source but I could be wrong and am reaching out for something official before I continue. Im leaning on just the fact that a 6 to 11 foot viper is pretty big, but a definitive answer is necessary for me to continue.