Cockroaches release tiny brown, capsule-like egg sacs, or oothecae, that store multiple embryos, according to Orkin. Depending on the species, the ootheca's size ranges from 5 to 10 millimeters. The protein content of th... More »

Cockroach bites typically cause the skin to become bright red and swollen, similar to a mosquito or bedbug bite, according to Roach bites are approximately 1 to 4 millimeters wide depending on the type... More »

Most catfish eggs look like yellow, slimy lumps or beads. Catfish eggs hatch in about a week, depending on the water temperature. There are approximately 2,200 species of catfish worldwide; their eggs vary slightly in te... More » Pets & Animals Marine Life Fish

As insects, ladybugs lay eggs rather than giving birth to live young. The female ladybug will lay the eggs, which are typically light yellow and podlike in appearance, on the underside of leaves, where the eggs are offer... More » Pets & Animals Bugs Beetles

Tarantulas begin life as eggs in egg sacs before hatching and leaving their mothers' burrows. They are solitary creatures, meeting only to mate during warm months. Males live for 10 to 12 years, but females can live to b... More »

Researchers at the University of Cambridge's zoology department have found that nesting mother birds do communicate with the embryos inside their eggs, though not through vocalizations or any other standard form of commu... More »

According to the American Pregnancy Association, there are two ways that a woman can become pregnant with more than one child at a time, either multiple eggs are fertilized at the same time, or one fertilized egg divides... More »