Besides physical characteristics, which are kind of obvious, infants are very trusting and of course dependant. Slowly, as they grow older they become less dependant. Though it does depend on who the person grew up or how, etc. still though they aren't as in need of constant help.
Every child is unique. It may be just your feeling. However I strongly recommend that you show your child to a pediatrician. It is not correct to come to a conclusion without examining the child.
The normal pulse rate for an infant tends to be a lot higher than an adult, teenager, or child. The range is usually between 140 -160 beats per minute.
child: 4' - 5' teenager: 5'+
The probability is zero! There is no such thing as "normal". Every child (and adult) has some unique characteristics and that makes them not normal - in that respect.
Teenager. He's 19
It depends on the number and ages in question. Typically a teenager can look after one or two kids, but it takes a bit older age to look after an infant or toddler.
An infant.
The AED can be used on a child if the child pads are available. Currently, the AED is not set up for infant use.
The word you are looking for is infant. Infant means small child.
Providing the infant has suitable documentation and supervision.
it stands for a small child. Example a baby is an infant
The murder of a child or infant is called "infanticide" .