Final answer:
Both humans and non-human animals (NHAs) have canine teeth, which are used for tearing food. The size and shape of canines reflect dietary habits and evolutionary adaptations, not personal preferences like pet ownership or favorite movies.
Step-by-step explanation:
Your question pertains to the presence and characteristics of canine teeth in humans and non-human animals (NHAs). In biology, we study the form and function of different teeth types, and canines play a specific role in mammalian dentition. Both humans and NHAs have canine teeth, which are the pointed teeth located on either side of the front incisors. These teeth are used primarily for tearing foods, a trait inherited from mammalian ancestors with varied diets.In terms of the factors that influence teeth size and shape, it is not related to pet ownership or favorite movies. Rather, the size and shape of canines, as is true for other types of teeth, such as incisors, premolars, and molars, can be indicators of an animal's or an individual's diet. Carnivores typically have more pronounced canine teeth for ripping meat, while herbivores may have less prominent canines, as their diets require more grinding and less tearing.Human canine teeth are relatively smaller compared to many carnivorous NHAs due to the omnivorous nature of human diets. However, this does not connote any relationship to social or entertainment preferences like pet ownership or movie tastes. Instead, tooth morphology primarily reflects dietary habits and evolutionary history. Therefore, Options 1 and 2 are accurate, as both humans and NHAs have canine teeth, and Option 4 is the most relevant to understanding the differences in canine teeth among various species.In conclusion, both humans and NHAs have canines that serve a functional role in their respective diets. The size and shape of canines are influenced by the types of food an organism regularly consumes and its evolutionary adaptations, rather than personal choices or interests.