Veterinary Drug Handbook (VDH) is the reference veterinarians turn to when they want an independent source of information on the drugs that are used in veterinary medicine today.


The time when a female animal is fertile and receptive to the male. Also known as a heat period. The time of the estrous cycle during which the bitch is receptive to the male. A stage in the reproductive cycle of the female dog and cat, also known as heat. Period of female's "heat" or maximal sexual receptivity.

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