Here's a starter for FB activity https://fb.me/e/3pPd9HvjK.
Otherwise it only came up with chevaux à vendre which isn't anything like that you are looking for.
Not knowing whereabouts you really need info for I looked on google.fr at Toulouse and came up with this place:
Recreation Association Equestres En Région Toulousaine
09 73 53 70 23
If you are new to the area any formal establishment will help increase your knowledge and confidence tremendously and put you in touch with competent vets, reliable farriers etc.
Best of luck in your searches.
