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->''“I’ll say that’s absurd, the proofs are circumstantial, it’s more probable that of late more and more you’ve been watching on your television many of those pictures of terror.” ''
-->-- '''Lt. Martinez'''

''Night of the Bloody Apes'', originally titled ''La Horripilante bestia humana'' ("The Horrible Man-Beast"), is a 1969 Mexican exploitation horror film directed by René Cardona, Sr. and starring José Elías Moreno, Carlos López Moctezuma, and Norma Lazareno.

The plot concerns a MadScientist named Dr. Krallman (Moreno) who transplants a gorilla's heart into his dying son Julio (Agustín Martínez Solares), saving Julio's life but causing him to mutate into a monstrous, ape-like creature who embarks on a rape and murder spree before being brought to justice by a ''luchadora'' named Lucy Osorio (Lazareno). The plot of the film does not concern Lucy bringing the ape-man to justice — rather, she has a much less pronounced role in the plot, the focus being primarily on Dr. Krallman and his increasingly desperate attempts to rescue his son from death.

Absolutely no relation to ''Franchise/PlanetOfTheApes''.

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!!Tropes of the Bloody Apes:

* ArtisticLicenseBiology: Needless to say, transplanting a gorilla's heart into a human patient won't cause the patient to mutate into a super-strong, murderous beast, much less ''cure leukemia'' as the doctor intended. In fact, doing so is more likely to result in tissue rejection.
* BillyNeedsAnOrgan: Julio is dying of leukemia and therefore requires a heart transplant, but there are no donor organs available. His father Dr. Krallman, however, believes that the blood from a more powerful animal such as a gorilla might potentially cure him of his cancer. He therefore decides that the best course of action is to break into the local zoo and steal a gorilla in order to use its heart to replace Julio's.
* BlindIdiotTranslation: As shown by the page quote, the translation in the English dub is ''very'' literal, having been translated word-for-word without adjusting the phrasing or [[StrangeSyntaxSpeaker syntax]] to English norms.
* DubInducedPlotlineChange: Originally released in 1969, the film was re-released three years later in an English-dubbed form, with new scenes inserted by another director to increase the gore for the American audience. The recut also changes the conclusion of the film so that [[spoiler:it is Lucy's boyfriend Lt. Martinez rather than Lucy herself who finally dispatches the wayward beast.]] Unfortunately, this has the effect of rendering much of Lucy's screen time rather redundant.
* ExploitationFilm
* EyeScream: Julio's beast form squeezes the left eye out of one of his victims (which apparently consists of what one reviewer describes as "a half-sphere type of thing backed by what appears to be a racquetball sized amount of grade-school paste or some kind of hot breakfast cereal.")
* FanDisservice: A lot of the beast's female victims are either fully or partially naked when they are assaulted.
* {{Gorn}}: Of all kinds, including StockFootage of an actual transplant operation.
* IOweYouMyLife: The reason why Dr. Krallman's assistant Goyo remains loyal to him throughout - the doctor helped save Goyo's life after he was injured in a horrific car crash. Even so, his allegiance is tested by Dr. Krallman's increasingly criminal behaviour.
* InconsistentDub: Dr. Krallman's dub actor seems to have a bit of difficulty agreeing on the pronunciation of Julio's name. Sometimes he will pronounce it correctly, and at other times he will pronounce it as "Giulio".
* InsistentTerminology: Thanks to the dub; they're not {{horror}} movies, they're "pictures of terror."
* MadScientist: Dr. Krallman fits the trope to a T, though he's a more sympathetic example than most.
* MsFanservice: Lucy has at least one extended nude scene.
* NeverTrustATitle: There is only one "bloody ape" in the entire film, and the action takes place over the course of several days rather than a single night. [[AvertedTrope Averted]] by the original Spanish title, which far more accurately reflects the plot of the film.
* OffWithHisHead: [[spoiler:Goyo has his head ripped clean off by Julio's beast form.]]
* PapaWolf: This is Dr. Krallman's primary motive - he is desperate to save his son's life by any means necessary.
* TragicVillain: Dr. Krallman is not actually evil, but driven by desperation. He has an understandable reason for his actions, even if he is clearly wrong for doing it.
* WellIntentionedExtremist: Dr Krallman's goal of saving his son's life is ultimately a noble one, but stealing zoo animals in order to harvest their organs and later kidnapping Lucy's injured friend in order to use her as a live organ donor is perhaps the worst possible way to achieve this.

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