Compared were the cut UK VHS by Satanica (BBFC 18) and the uncut R-Rated DVD by Satanica.
There are missing 2 minutes and 50 seconds within 20 scenes.
A doctor transplants a heart from a gorilla to his son Julio to save his life, because he's suffering from a heart disease and is soon going to die. But with disastrous consequences, for Julio is turning into a terrifying and murdering beast caused by his new heart, so he begins a bloody hunt.
This Mexican film appears to be quite cheap and crazy, considering for example that they used real recordings for the heart surgery. Regarding the quality you have to bear in mind that the movie is 40 years old and the budget was really low. Of course it's highly recommended for trash fans.
At first the film was released in the theaters in the UK, already censored. Apparently the movie was already cut by the publisher before they submitted it to the BBFC. They demanded for two further cuts to provide the former BBFC-X rating for the cinema release.
The first edition of the UK VHS by IFS was uncut (according to ofdb) and was later put on the infamous list of video nasties. The later released UK VHS by Satanica/Sovereign and the UK DVD by Film 2000 are cut and contain the same cut version. Both releases have the BBFC 18 symbol. The film was cut in advance by the publisher for the VHS release and this version was submitted to the BBFC. Equally to the cinema release they demanded further cuts to give a BBFC 18 rating. This arises from a conclusion from the official BBFC cut-list, which lists fewer cuts than those which were actually made in the film. So for example, the eye-scene is missing in the BBFC list, although it was censored.
The UK DVD by Film 2000 should have been released uncut according to the label. But apparently they just received the old censored master, so finally they released that version. In contrast, the UK DVD by Redemption is uncut, but it's not listed in the BBFC data base.
Moreover the US DVD by Something Weird Video or Deimos Entertainment/BCI Eclipse can be recommended, because it's uncut and it contains some other films in addition to "Night of the Bloody Apes".
Thanks to thebickerman for a lot of information.
A shot was cut during Julio's heart surgery.
There are missing some further shots of the operation. At the end, they remove his heart to substitute it with a gorilla-heart.
Julio gets close to the naked woman in the bed.
The woman gets attacked by Julio. She tries to defend herself, but she stands no chance.
Julio keeps attacking her and she gets badly injured.
Further shots of that are missing.
A shot of the blood-splattered wall and of the woman's hand dripping with blood.
The corpse of the woman is shown. For the reason of continuity there's also missing a shot of the horrified-looking man, who found the corpse.
The neck of the man gets bloodily torn open.
The camera tracks in on the neck wound of the dead man. The following shot of Julio running away is missing too.
The exposed woman in the park gets attacked by Julio.
The knife pierces into the belly.
The stabbing of the man goes on. The close-ups of the bloody wounds are missing.
Another close-up of a bloody stab wound.
Julio squashes an eye of a man.
There are missing some shots of the second heart surgery.
More shots of that are missing.
Julio tears off the man's head. In between you can see Julio's father leaving the car and running out of the picture.
A police man gets ripped off a piece of his scalp by Julio.
Finally Julio bloodily squeezes the face of a male nurse.