There is no chance that animal does not have enchi and pastel in it. None.
I think the real question here is whether or not you hit on the spider. I vote yes. The one that died - do you know why? We could be seeing some strange effect due to an incubation or development issue? Either way, that animal has pastel enchi in it.
The pastel that died just never made it out of the egg. It went full term and when I came home from work it was half way out laying upside down.