I have a toy poodle that is 18 months old but she isn't in heat. At least that's what I think. Isn't too late?? Is it silent heat? If it is, what are some symptoms of it? Also, please don't say "SPAY UR DOG" because I never asked for "SPAY UR DOG" The reason I'm not spaying my dog is because I don't feel like it:)) I was joking, but seriously, I'm not going to spay it. So don't tell me "SPAY UR DOG" because I don't want to. So, is my dog in silent heat?? Can you please tell me the symptoms??