Indeed, you read that right: a few cockroaches feed their young a sort of milk. One such model is the Pacific beetle cockroach.
Cockroaches are bugs of the order Blattodea, which additionally incorporates termites. Around 30 cockroach species out of 4,600 are related with human environments.
Most female cockroaches lay eggs in a sac called an ootheca, which they drop from their bodies before the eggs are going to incubate. After the youthful cockroaches incubate out of the eggs, they rush about searching for food.
However, the Pacific bug cockroach female adopts an alternate strategy to childcare.
Rather than laying eggs, the undeveloped organisms create inside her brood sac, her form of a belly. When the incipient organisms have full fledged guts, they begin drinking "milk" created by cells inside the brood sac, and immediately put on weight.
Since the youthful cockroaches get a great deal of nourishment while still inside their mom's body, they are more evolved and developed when they are at last conceived.