Safe for Animals? * PLA DD = Yes * PLA Bowden = Yes * PETG DD = Yes * PETG Bowden = No (This is due to breakdown of PTFE tubing in Bowden setup when printing at temps used for PETG or higher ~230C +) I see. From what i've heard, PETg is stronger than PLA, but I don't think the trade-off would be beneficial. PLA fumes from 3D printing are somewhat toxic. Some PLA filaments have additives that give off harmful vapors when heated to a certain temperature. Although natural PLA filament fumes aren’t toxic, the tiny particles can irritate your respiratory system regardless. nAtBHSa.