Kevin Schafer / Ring-tailed Lemur (Lemur catta) in Octopus tree, Mantady National Park, Madagascar

Jouan & Rius / Close-up of octopus tree (Didierea trolli), Spiny Forest / Thicket, Madagascar

Nick Garbutt / Octopus tree close-up {Didierea trolli} Spiny forest, S Madagascar

Nick Garbutt / Baobab tree (Adansonia rubristripa) next to Octopus tree (Didierea madagascariensis) Madagascar

Patricio Robles Gil / Ring-tailed Lemur (Lemur catta) eating fresh leaves from Octopus Tree (Didierea madagascariensis), Spiny Desert, Madagascar

Patricio Robles Gil / Octopus Tree (Didierea madagascariensis) forest at dusk, Spiny Desert, south Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) mother and baby sitting at the base of an Octopus tree, vulnerable, Berenty Reserve, southern Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) mother and baby sitting at the base of an Octopus tree, vulnerable, Berenty Reserve, southern Madagascar

Patricio Robles Gil / Octopus tree {Didierea trollii} Spiny desert, Madagascar