yes
Yes; platypuses lay soft, leathery eggs rather than hard-shelled eggs.
No, they lay soft eggs inside the water.
yes
No, their eggs are soft. Caviar is fish eggs.
No, their eggs are soft. Caviar is fish eggs.
yes
Yes, iguanas lay eggs.
I've never heard of a spider with hard eggs. I always heard they were soft.
Marine iguanas are prey for Galapagos Hawks. When the females go into the caldera to lay eggs in the soft ash, the hawks have a killing spree! They kill by digging their talons into the iguanas' bodies.
Iguanas are mammals and don't lay eggs!
Iguanas typically lay eggs about 60 to 90 days after mating. The exact timing can vary depending on the species and environmental conditions. Female iguanas usually seek out a suitable nesting site to dig a hole where they will lay their eggs, which can number from a few to over 30, depending on the species. After laying, they often abandon the nest, leaving the eggs to incubate on their own.
Green Iguanas (female) will dig holes in the ground to lay eggs. She will dig additional holes to confuse would-be egg poachers. After that she leaves the eggs, the hatchlings will grow up by themselves.