I noticed today while watching my little ones eat that my Avicularia Metallica and my Acanthoscurria Geniculata will nibble on the cricket a little, then stop and wrap it up in webbing, then nibble some more, then wrap it up more, then eat more. My Euphalastrus Campestratus doesn't do this, though. It just eats. Any ideas why they do this? It's fun to watch, I was just curious why.