Hi - just wondering how your boy went? I have a 63kg male bull mastiff that we had implanted 20 April 2012. I really wish I had of found this forum prior to the implantation as the vet told us two things and two things only 1) 12 months 2) reversible!!!
Cuda (male) was so randy lol we just had to separate them as he just would not leave Kira (female) alone..... so much so that when we did separate them he chewed through the wire fence to get to her!!!! She came into season May 2013 and Cuda showed no interest, but I thought the implant may still be wearing off so didn't think too much of it, but she came into season again in October and again nothing - totally different dog. She would back up to him, move her tail to the side and present herself and he wouldn't even so much as sniff. We took them both into the vet, the vet managed to get an erection from Cuda but no sperm was produced. I am so annoyed - the vet is contacting me today at 9am, as I've only learnt all this new information in the past 2 days. I've printed out the 38 page technical file from the companies website - and I quote "the majority of dogs will regain normal fertility within one year after the 4.7mg implantation (6 mth one) and within 2.5 years after 9.4mg implantation (12 mth). WHY ON EARTH don't they just call it 12 mth and 2.5 yrs implant. So annoyed it's not funny. Cuda is going on 18 mths after implantation and if these figures are correct looks like we have another year to wait which will make him 6 years old - is that too old to breed? I will be devastated as he is such a gorgeous dog both in looks and temperament I don't want another "stud" dog which was the vets solution. grrrrr