A human cell contains 46 chromosomes. And the sex cell - half of this amount - 23 chromosomes. At the same time, when the sex cells of a man and a woman unite, a complete set of chromosomes identical in structure and coding is obtained, fertilization occurs and development begins. A dog cell contains 78 chromosomes, in addition, dog DNA and RNA helices are completely different in structure from human ones. The chromosome sets that the germ cells of a dog carry are completely different from the chromosome set that exists in humans. They differ significantly from each other in the same way as parts from completely different puzzles or constructor models. Thus, even if we artificially try to introduce a dog's spermatozoon into a woman's egg cell, then there will be no coincidence, the puzzle will not work out, conception will not occur. And even if you still try to somehow forcibly fasten this material, and then transplant it into the uterus of a woman, then her body will immediately reject this mutant. Nature reliably takes care that only viable individuals are born.