Definition of statement for English Language Learners. : 1  something that you say or write in a formal or official way : something that is stated. : 2  an opinion, attitude, etc., that you express through the things you do, the way you dress, etc.
A dog owner should have an idea when the pet will go into heat. The reproductive cycle varies from breed to breed. Generally puberty will occur as early as 6 to 12 months in small breeds and as late as 2 years in large breeds.
Starting Heat Cycles. Female dogs go into heat when they are unspayed and reach puberty. The time at which this happens depends on the breed. While the average age at which female dogs go into heat is about 6 months, smaller dogs may enter estrus earlier and larger dogs may not do so until they are nearly 2 years old.