Vaginal sex with dogs

Canine reproduction is the process of sexual reproduction in domestic dogs , wolves , coyotes and other canine species. In domestic dogs, sexual maturity puberty occurs between the ages of 6 to 12 months for both males and females, although this can be delayed until up to two years of age for some large breeds. The average length of the reproductive cycle for females is 2—4 weeks. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. Proestrus , in which eggs in the ovaries begin to mature and estrogen levels begin to rise, is the first stage of the reproductive cycle. During this stage females, though non-receptive, attract males.
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Human-on-dolphin sex is not really that weird | genericlevitraovernight.com

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Non-reproductive sexual behavior in animals

Sex, we are told, is pleasurable. That's because most scientific accounts of sexual behaviour rest upon evolutionary explanations rather than the more immediately relevant mental and emotional experiences. To say that we have sex because it helps us to preserve our genetic legacies would be entirely accurate, but the more fleeting, experiential, pleasurable aspects of that most basic of social urges would be missing. It would be like staring at a painting with half the colour spectrum removed from it.
This week, the media went nuts over revelations in a BBC documentary about Lovatt's interactions with a male dolphin during a NASA-funded experiment in the s. It was just easier to incorporate that and let it happen. Then came the headlines. Judging from the collective horrified response, you would think that a human giving a handy to an animal was an aberrant, unthinkable act.
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