https://www.dogbreedinfo.com/breedingpregnancyguide.htm

http://www.briardacres.com/whelping.html

https://www.dogbreedinfo.com/whelpingproblem.htm

https://www.dogbreedinfo.com/breedingdogs/whelpingprematurepuppy.htm

http://www.welshcorgi.com/lists/archive16.html

http://lumatomio.cz/b_porod_english.htm

http://www.kimbertal.com/about-your-dog/whelping-plan
