Not in the human sense. The bloody discharge during a dog’s heat (proestrus) comes from estrogen-driven uterine vessel engorgement, not from shedding the uterine lining...

A complete heat cycle (estrus) lasts about 21-28 days, with the receptive/fertile window of 5-9 days in the middle (estrus stage). Most dogs cycle twice...

Average canine gestation is 63 days from the LH surge (ovulation), but ranges 56-72 days from breeding. The variability is because sperm survives several days...

Ringworm is not a worm - it’s a fungal infection (Microsporum canis or Trichophyton species). Dogs get it from contact with infected animals (especially cats...

Dogs pick up fleas from environments where fleas live: tall grass, leaf litter, carpets, other infested pets, wildlife yards (squirrels, raccoons, feral cats), and boarding/groomers....