I've been feeding Spike some weeds from the backyard that, according to the Tortoise Table, are considered Do Not Feed items. However, they seem to be OK-ed on the forum, so now I'm conflicted on what weeds are considered safe for Spike to consume versus those that should never be fed. From the Tortoise Table, prickly lettuce is a Do Not Feed item because of its narcotic and sedative properties, which mean exactly what as consequences for a tortoise? Addiction and sleepy moods? Please help me understand why prickly lettuce shouldn't be fed.