age for dogs to come into heat

Question
i have a female chiwawa and she is 6 monts olt. when will she come into heat.

Answer
Hi Judy;
This is a good time to have her spayed, before she has her first season.
Depending on the dog, it can be anywhere from 5 or 6 months on.
So, she could come into season anytime now.
Much healthier for her if she is spayed before her first season.
Charlotte