A collapsing egg can mean one of multiple things. First, if you haven't already, check to make sure the egg is fertile. Sometimes even infertile eggs will last a while before they go bad. Low humidity can be another issue, but if the other eggs are just fine it might not be the problem. Either way, check to make sure the substrate you are using is moist (not wet). If it is dry, dampen the substrate around the egg (not the egg itself) and cover it up a little more. If the humidity is not the problem there are a couple other things I can think of. The egg could have gone bad for some reason or another, such as humidity problems, temp too high/low or fluctuations in temp. The other option could be that it will hatch soon, but at 35 days its still a little early. If you are incubating them at high temps (around 89-90F) this could be possible. Hopefully its nothing bad. When my eggs collpse they usually come back around once I figure out the problem. I hope this helps. Good luck with it!
Emily
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2.4.2 leopard geckos
1.1 ferrets (Oliver and Delilah)
1. parakeet (Max)
1.1 German Shepards (Jake and Abigail)

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