Hmm, maybe the brain hormones change with pregnancy. I have no more problem with children and animals at risk than with adult humans, or aliens, elves, etc., for that matter. If it's a life form, I have due compassion for it. Call me a biophile. Go ahead. See if I care.
Whatever or whomever you put at risk or to duress, do it for a very good reason. Get gratuitous or gleeful about it, I won't read any further.
An interesting example of the animal-squeamishness phenomenon: My favorite Dean Koontz book is
Watchers, which centers around an intelligent Golden Retriever and its monstrous counterpart, both created in a government laboratory. The monster (a really really really scary one, yum) goes around killing random humans in very nasty ways. At the same time, a hitman is murdering anyone connected with the government laboratory. In even nastier ways. Beating them to death with hammers. Using a corkscrew to pierce their hearts.
But the only peril that got readers of my acquaintance really worked up, that they had to bull their way through, was when the Golden Retriever was menaced.
Go figure.