You were either born with it (due to genetics), or you have suffered some kind of brain injury as a result of trauma or lack of Oxygen. Even people with dementia and Traumatic Brain Injury later in life can resemble someone who's "retarded".
Personally, I prefer the term "mentally disabled".
Mentally retarded is not a medical term. A brain hemorrhage may cause brain damage that could affect one or many functions of the brain.
As in mentally retarded, yes, only something with a brain can be mentally retarded. The GROWTH of plants can be retarded, which means they are not growing as fast as they should.
The Brain Damaged Horse is on the episode "Family Gay" when peter buys a mentally retarded horse instead of Lois' Groceries.
If the reason for the retardation is Down's Syndrome, the children have slanted eyes, flat faces, and small ears. Others that became mentally retarded because their brain was deprived of oxygen at birth have no features that show they are different.
second example: the brain of the questioner can be used for exhibition when pickled in formalin as an example of retarded brain sample and it can be used as a paper weight when shrunk.
About 10% of the mentally retarded population is considered moderately retarded.
Retardation is holding something back. In a way, applying the brakes in a car is retardation.
Marriage is a personal choice that can bring fulfillment and companionship to individuals. It is not appropriate to use the term "retarded" in this context as it is derogatory and offensive. It is important to respect individuals' decisions regarding marriage and to use respectful language when discussing the topic.
Approximately 85% of the mentally retarded population is in the mildly retarded category.
To start out, nothing, either animal or human, should be called retarded in ANY case. There are animals, however, born with mutations or that could be injured in accidents, so in that way, yes, there are squirrels that could be brain damaged or be a mutation so they might act differently.
Josh Perry (Ponce), the actor who portrays the Retarded Policeman on YouTube, has Down Syndrome.
Only 1-2% of the mentally retarded population is classified as profoundly retarded.