'[Rowan's] been on this planet for 18 months, and he's loaded with a chemical I've never heard of,' Holland, 37, said. 'He had two to three times the level of flame retardants in his body that's been known to cause thyroid dysfunction in lab rats.'
Well depending on what species of rats they are testing on I would assume that Rowan weighs about five to ten times as much as your average lab rat.