BY MARCY SHORTUSE – Pet owners, be aware: Sago palm trees are in full fruit, and the red nuts that fall all over the ground can kill a pet or child if ingested. Several island dogs have succumbed to sago palm fruit toxicity over the years, as all parts of the Sago palm are poisonous. The seeds (nuts) are the most toxic to pets, though, and are easier for them to eat than the prickly fronds. For some reason, some pets seem to find them attractive and tasty, which is a fatal problem.