It’s Nature

Went for a walk with my new girlfriend and we saw two dogs mating. She said 'How does the male know when the female is ready for sex?'

I replied he can smell she is ready, thats how nature works!
We then walked past a sheep field and the ram was mating the yew, again my girlfreind asked how the ram knew when the ewe was ready for sex.

I replied 'It's nature, he can smell she is ready'!
We then went past a cow field and the bull was mating the cow, my girlfriend said 'This is odd, they are all at it, surely the bull can’t smell when she is ready', and I said 'Look, its nature. All animals can smell when the female is ready for sex'.

Anyway, after the walk I dropped her home and kissed her goodbye, and she said,'See you soon. I hope your cold gets better!’