The most specialized organism is the GRIZZLY BEAR.
Specialized animals refers to those animals, which have different types of cells in their body which carry out different types of functions. Specialized animals are majorly multi cellular animals, whose cells have been differentiated to perform different functions. Examples of specialized cells in humans are neurons, red blood cells, macrophages, myocytes, etc. These cells have specifically adapted structures, shape and composition that made them suitable for the functions that they perform.