16 months old bitch still not in heat

[Nut]

She still act like a pup, no dog agresive, no cat agresive... Maybe she will start after first heat????

I have a 3 year old female who's doesn't show any interest to other dogs on the street. She would play with em.
But when's she goes to work you will see a whole different type of dog.

16 month is young.