Toddler is a common term for a young child who is learning to walk or "toddle" ^[1], generally considered to be the second stage of development after infancy and before childhood occurring predominantly during the ages of 12 to 36 months old. CHILD syndrome (or congenital hemidysplasia with ichthyosiform erythroderma and limb defects) is a genetic disorder Walking (also called ambulation) is the main form of Animal Locomotion on land, distinguished from Running and crawling CHILD syndrome (or congenital hemidysplasia with ichthyosiform erythroderma and limb defects) is a genetic disorder ^[2] During this period, the child learns a great deal about social roles and develops motor skills; to toddle is to walk unsteadily. Walking (also called ambulation) is the main form of Animal Locomotion on land, distinguished from Running and crawling The term cruising is used for toddlers who cannot toddle but must hold onto something while walking.

The toddler developmental timeline shows what an average toddler can do at what age. Times vary greatly from child to child. It is common for some toddlers to master certain skills (such as walking) well before other skills (like talking). Even close siblings can vary greatly in the time taken to achieve each key milestone.

This age is sometimes referred to as 'the terrible twos', because of the temper tantrums for which they are famous. This stage can begin as early as nine months old depending on the child and environment. The toddler is discovering that they are a separate being from their mother or caregiver and are testing their boundaries in learning the way the world around them works. This time between the ages of two and five when they are reaching for independence repeats itself during adolescence. Thus it is very important for the caregiver to be consistent with boundaries and discipline for the child’s safety and the caregiver's sanity through puberty.

Most children are toilet trained while they are toddlers. Toilet training, or potty training, is the process of training a young child to use the Toilet for Urination and Defecation. In most Western countries, toilet training starts as early as 17 months for some while others are not ready to begin toilet training until they are three.

When toddlers can walk they are still often transported in a buggy, or stroller, when they are tired, or to increase speed.

Around 18 months, the toddler's vocabulary will greatly increase, and he or she may learn as many as 7-9 new words a day.

Overview table

Age	Physical	Mental	Emotional
12–15 Months	Stand alone well. "Pose" redirects here For other uses see Pose (disambiguation. Drink from a cup (poorly). Drinking is the act of consuming a liquid through the mouth Water, for example is required for many of life's physiological processes and excess or decreased water intake Turn pages in a book (a few at a time). A Book is a set or collection of written printed illustrated or blank sheets made of Paper, Parchment, or other material usually fastened together Play ball by rolling or tossing it. Play is a Rite and a quality of mind in engaging with one's worldview. BALL ( Biochemical Algorithms Library) is a C++ library containing common algorithms used in Biochemistry and Bioinformatics.	Uses four to six letter words such as "ball" or "cookie" Can follow a simple command with an associated gesture, such as: bringing a cup to you when you point at it and say "Please bring me the cup". Object Permanence: Realizes things still exist when they are out of sight, such as a toy block placed into a closed box. This article is about playthings For other uses of the term see Toy (disambiguation.	Use gestures or words to convey objects, such as: Pointing at a book, raising arms to be picked up, or saying "cup". Mimic actions such as covering eyes while playing Peekaboo. Eyes are organs that detect Light, and send signals along the Optic nerve to the visual areas of the brain Peekaboo (also spelled Peek-a-boo is a game similar to Hide and seek, but played with babies. It is very important to make sure that words are used with gestures so the children learn to talk along with signing.
15–18 Months	Walk well alone. Walking (also called ambulation) is the main form of Animal Locomotion on land, distinguished from Running and crawling May be able to bend down and stand up without help. Hold a crayon well enough to scribble. A crayon is a stick of colored Wax, Charcoal, Chalk, or other materials used for writing and Drawing. A scribble is a Drawing composed of Random and abstract lines generally without ever lifting the drawing device off of the paper Lift cup up to mouth for drinking. The mouth, buccal cavity, or oral cavity is the first portion of the Alimentary canal that receives food and begins digestion by mechanically breaking up Climb onto furniture. In Aviation, the term climb refers both to the actual operation of increasing the altitude of an Aircraft and to the logical phase of a typical flight (often Furniture is the Mass noun for the movable objects which may support the human body (seating furniture and beds, provide storage or hold objects on horizontal	Uses 10–20 words. May be able to follow a command without a gesture. Stack two blocks.	Address others with greetings. Mimic parental activities such as cleaning up or talking on a telephone. Cleanliness is the absence of dirt including Dust, Stains bad smells and Garbage. Speech refers to the processes associated with the production and perception of Sounds used in Spoken language. Basic principle A traditional landline telephone system also known as "plain old telephone service" (POTS, commonly handles both signaling and audio information
18–24 Months	Feed self with a spoon. A spoon is a Utensil consisting of a small shallow bowl at the end of a handle used primarily for serving and eating Liquid, or semi-liquid foods and solid foods Run. Climb into a small chair. A chair is a kind of Furniture for Sitting, consisting of a back and sometimes arm rests commonly for use by one person Walk up steps.	Speaks 20–50 words; understands many more Stack six blocks Understands non-physical relationships such as turning on lights or pushing buttons. Sorting toys. Searching for hidden objects. Problem solving through experimentation.	Wants to be independent at times. Will throw a tantrum or possibly say no. Mimics social behavior such as hugging a teddy bear or feeding a doll. Behavior or behaviour (see spelling differences) refers to the actions or Reactions of an object or Organism, usually Physical intimacy is sensual proximity and/or touching It can be enjoyed by itself and/or be an expression of Feelings (such as close Friendship The teddy bear is a stuffed Toy Bear. It is an enduring traditional form of a Stuffed animal, often serving the purpose of comforting children A doll is an object that represents a baby or other human being but includes likenesses of animals and imaginary creatures Self recognition. The mirror test is a measure of Self-awareness developed by Gordon Gallup Jr Self reference. Self-reference is a phenomenon in natural or Formal languages consisting of a sentence or Formula referring to itself directly or Displays attachment. Attachment theory, originating in the work of John Bowlby, is a Psychological, evolutionary and ethological theory that provides a descriptive Separation anxiety. Anxiety is a physiological and psychological state characterized by Cognitive, Somatic, Emotional and Behavioral components Can play turn-taking games. A game is a structured activity, usually undertaken for Enjoyment and sometimes also used as an Educational tool
24–36 Months	Advanced mobility and climbing skills. Increased dexterity with small objects, puzzles. Able to dress oneself.	Speaking in sentences. In Linguistics, a sentence is a grammatical unit of one or more words bearing minimal syntactic relation to the words that precede or follow it often preceded and followed Easily learns new words, places and people's names. Anticipates routines. Plays with toys in imaginative ways. Attempts to sing in-time with songs. A song is a Musical composition. Songs contain vocal parts that are performed 'sung' and generally feature Words ( Lyrics) commonly followed	Knows boys from girls. Shows preferences, such as clothes and entertainment. Knows how to play different games.

References

Preceded by Infancy

Stages of human development Toddlerhood

Succeeded by Early childhood

Human development is the process of Growing to maturity In biological terms this entails growth from a one-celled Zygote to an adult Human being Early childhood is a stage in human development. It generally is the sum of Toddlerhood and play age, the latter which in Psychosocial development

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