Yes it is normal. I had on Pom that didn't go into heat until she was a year old, and I have had another that went into heat at 9 months. You just never can tell how old they will be before thier first heat. Just keep watching for the signs such as a swollen valva, bleeding, constant grooming of the area and humping. Good luck
Life isn't like a box of chocolates . . it's more like a jar of jalapenos.
Daisy just went into heat last week and shes about 9 months old now- and i was also worried i wouldnt know the signs but i could tell right away once her private swelled to 3x the normal size and she started bleeding all over my bed. And now its week 2 and she has started trying to hump Bentley ( he is neutered) but doesnt know what to do. she tries to hump his head..lol and now shes trying to hump the stuffed toy monkey- gosh the same stuffed animal Bentley use to use before he was neutered and was humping the cat and this stuffed monkey- He drug this monkey out of my closet that i hid awhile back and it was funny he drug it out for Daisy and now shes been humping this monkey..lol whats with this monkey? its bigger then them both and its the hump monkey..lol I keep hiding it but some how they find it-