Begins to understand the concept of books (loves to turn the pages)

May observe a single object for extended period of times

Explores many objects with his mouth

Deliberately introduces variations into games he is playing

Remembers tastes, smells and textures of things

Applies labels to whole groups of objects, like dah might be a word for dog, cat horse or any animal

Word production increases, although still low, but pronunciation is not clear

Often uses gestures as a form of sign language to communicate

Increased focus on primary caregivers, often with signs of affections, such as hugs and kisses

begins to become more assertive

Is able to drink from a cup with a lid

Is able to wave goodbye and hello

]Is able to stand without support for a few seconds, and may be taking a few steps

Begins to climb on a variety of objects, such as chairs and couches

Loves to test cause and effect (flushing toilets, or closing doors)

Loves to play with spatial relationships (pouring water from one container to the next)

Problem solving skills are exercised constantly (figures out how to open drawers)

Places objects in containers and then removes them

Begins to anticipate events, such as the tickle at the end of this little piggy

Begins to label familiar objects and people, but continues to over generalize labels for categories of objects

Imitates common animal sounds

Manipulates her voice so that sounds mirror adult conversations

Comprehension of words continues to far outpace pronunciation

Displays a wide range of emotional states in a very short period of time

Begins to respond differently to different caregivers, often demonstrating more negativism to caregivers to whom she is closest

Begins to understand and to comply with adult rules and conventions

Feels empathy for others and will often offer some type of assistance to others in needs

Is able to grasp a crayon

Walks everywhere, would rather push a stroller than ride in one

Begins to be able to manipulate puzzle pieces that have large handles

Begins to refer to himself by name

Imitation of adults becomes a favorite activity

Begins to  manipulate multiple objects (holding an object in each hand)

Begins to engage in more play that is independent of you and other adults

Increasingly likes to test limits

Begins to add suffixes to words to make plurals

Dramatic increase in number of words he is producing

Over generalizes grammatical rules (think becomes thinked)

Uses names of objects to ask for them

Begins to ask what things are called

Becomes much more sensitive and feelings are often hurt

Peer communications are mainly visual rather than verbal

Takes time to be comfortable in new situations

Able to bend and pick up a toy without falling

Able to walk up steps with some assistance

Able to take a few steps backwards

Able to throw a ball overhand

Able to twist and move to the beat of a song

Becomes increasingly aware of sounds and increasingly fond of the repetition in these sounds

Begins to want to choose things for herself

Begins to use reasoning rather than trial and error

Begins to be able to focus on a single task, while still being able to monitor other things happening in her environment

Begins to understand that she is a girl (or a boy)

Begins to hum and sing songs with which she is familiar

Begins to use "I" and "me"

With the onset of multiple word sentences, begins to use grammatical forms

Begins to use the appropriate form of irregular verbs (Thought instead of thunk or thinked)

Begins to combine words into two and possibly three word sentences

Uses the terms please and thank you when prompted

Begins to hold self dialogues that reflect every day life

Demonstrates pride in accomplishments

Becomes focused on possession of objects

Begins to engage in shared play with other toddlers

Emotional states are longer lasting and less rapid change between emotions

Begins to become more sociable and less confrontational

Transitional objects become a source of comfort

Loves to test physical limits (jumps off stairs)

Is able to kick a large ball

Is able to roughly copy a circle

Begins to be able to manipulate puzzle pieces without handles

Ability to reach for and grasp objects improves dramatically

Begins to be able to jump short distances

Is now playing while squatting