Black-ray goby mother bird regurgitating food to her chicks. This way, the shrimp and the goby are kept well fed. Sometimes, if the shrimp is not kept well fed, it will resort to killing the goby. In the wild, most burrows are shared by male and female goby pairs, with their respective shrimp partners, and the female goby will use this burrow as a nesting site to lay her eggs. The obvious benefits to both organisms of this symbiotic relationship make the interaction a form of mutualism. Here is an interesting example of this. The other fish is a dartfish (genus "Ptereleotris").
Little Grunt and the Big Egg Kirkus Reviews found "The illustrations are typical dePaola. The kids will lap it up, as they do TV cartoons of the same undemanding quality." while Publishers Weekly stated "This lively twist on the familiar tale of a boy and his pet is sure to provoke giggles." Little Grunt and the Big Egg "Little Grunt and the Big Egg (A Prehistoric Fairy Tale)" is a 1990 picture book written and illustrated by Tomie dePaola. It is frequently studied in elementary schools in the United States. It was adapted into a play by William Morton. The Grunt Tribe live in a big