Even though Harry and Ron told Aragog that they were friends of Hagrids, why did Aragog still try to kill them?
‘Kill them,’ clicked Aragog fretfully. ‘I was sleeping …’
‘We’re friends of Hagrid’s,’ Harry shouted. His heart seemed to have left his chest to pound in his throat.
‘My sons and daughters do not harm Hagrid, on my command. But I cannot deny them fresh meat, when it wanders so willingly into our midst. Goodbye, friend of Hagrid.’
HP and the Chamber of Secrets