The dental formula i 3/3, c 1/1, pm 4/4, m 2/3 represents that of a

Step 1: Analyze the question We are given a dental formula and asked which animal it belongs to. The formula is written for one side of the jaw (upper/lower): i 3/3, c 1/1, pm 4/4, m 2/3.

Step 2: Recall the dental formulae

• Dog: i 3/3, c 1/1, pm 4/4, m 2/3. Total = 2 × (3+1+4+2 upper + 3+1+4+3 lower) = 2 × 21 = 42 teeth
• Cat: i 3/3, c 1/1, pm 3/2, m 1/1 = 30 teeth
• Man: i 2/2, c 1/1, pm 2/2, m 3/3 = 32 teeth
• Rabbit: i 2/1, c 0/0, pm 3/2, m 3/3 = 28 teeth
• Sheep: i 0/3, c 0/1, pm 3/3, m 3/3 = 32 teeth

Step 3: Compare Only the dog has the formula with 4 premolars in both jaws and 2 upper molars with 3 lower molars. That gives the total of 42 teeth, which is typical of the adult dog.

Other checks:

• The cat has fewer premolars (3/2).
• Man has only 2 incisors per side and no premolar count of 4.
• The rabbit has no canines (a diastema instead).
• The sheep has no upper incisors or canines.

Answer: B. Dog

Tip: Remember the dog as the "42" animal: 3-1-4-2 on top and 3-1-4-3 below. Carnivores have well-developed canines and carnassial (shearing) premolars/molars. Herbivores like rabbits and sheep lack canines, which leaves a gap (diastema).