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

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

Nick Garbutt / Verreauxs sifaka {Propithecus verreauxi} feeding in prickly tree {Didierea sp} Anjahampolo Spiny Forest, Madagascar

Nick Garbutt / Verreaux's sifaka with baby feeding in spiny Didierea tree {Propithecus verreauxi} Anjahampolo Spiny Forest, Madagascar