So we know desert females are mostly infertile, and pearls (hgwomaxhgwoma) don't have a very good life expectancy...What other morph / morph combo's have had issues? I'm new to the scene and genetics intrigue me immensely. Are there other "fatal" combo's or supers? (I know that NERD does have a living pearl, but until they figure out what made that one tick longer than others I still consider it a fatal combo, just my opinion)

Another issue is the "wobble" of spiders, any other morphs that have other odd traits?

Thanks I'm bored and always have questions floating around in me head.