For resources:

In your country the best book would that by H.G. Wolff on Homoeopathic Treatment of dogs.
It is by the largest homoeo-medical publisher.
Also on amazon, also repeated English translations/editions.
Good reviews by customers and in homoeo-medical journals.

In English:
Besides that, the Book by Don Hamilton has also a chapter on the disease ( I would regard it as the ideal intro reading for vet hom. in this language ).

In your country there should be no lack of well-qualified homoeopaths I should think. Also homoeo-doctors "for humans" sometimes treat animals ( not forbidden by law; it varies throughout the continent ).

If there is a longer history of ailments, then a professional may see connections, which a self-prescriber is not aware of ( otherwise, why would the former need a lengthy training ?).
I should think it worth the investment of time and money.

Kind Regards,
Panthera