Select the INCORRECTLY spelt word in the given sentence.
Large-scale hunting scenes and slaugter of wild animals is a heinous crime.

The correct answer is Slaugter.

Let's analyze the spelling of the words highlighted from the sentence:
1. Hunting: This is spelled correctly. It refers to the activity of chasing and killing wild animals.
2. Scenes: This is spelled correctly. It refers to the places where an incident or action occurs.
3. Heinous: This is spelled correctly. It means utterly odious or wicked.
4. Slaugter: This spelling is incorrect. The correct spelling of the word is Slaughter (which contains the letter 'h' after 'g'), meaning the killing of animals for food or the killing of a large number of people or animals in a cruel way.