The door to Rion's lab is just a little ways down from Vine's lab, as well as being attached on the inside due to their status as a married couple. It's clear from the handwriting here and there that Vine assists in much of the organization. Rion is hardly here due to their nomadic nature, with much of the care towards the creatures being automated by AI. It helps that insects and arachnids don't mind much, since that is the special interest of the lab.