NOTE: lubricants is not included. 1. Dogs with estrus behavior at home (holding legs, riding over dolls, making love to the air, etc.),only chasing female dogs outside, and not estrus behavior at home, are not recommended to buy. 2 dog can not be too stupid, if your dog belongs to what can not teach, a few years will not be fixed to the kind of toilet, do not recommend to buy 3. The host needs to be patient.Dogs are emotional creatures, too, and mating doesn't happen all the time.It may not be used on the spot, but dogs with estrous behavior will use it sooner or later under the patient guidance of their owners.  The key is the timing of the guidance, to lead when it is in heat, when it is in heat, the toy is coated with lubricant, it is hard JJ to help it into the silicone channel, the dog will definitely use.