This is just a reference for the claimer heart where new dots appear as the person claims personal treasures. Ere... In this case the heart will have a part of it modify so that it shows the number of claimed ones before it reaches saturation. And yes it can reach saturation... though only after around 100 claimed treasures.

What qualifies as a treasure? For the purposes of this, sapient beings. as in humans, anthros, and even intelligent quads. And this mark with the center shows their number in the numeral that they can best recognize or the claimer can recognize if they do not have a default numeral system they understand.