## To determine who could be in this group, we can analyze the given information about legs, heads, ears, fingers, and tails. Let's break it down:

- There are 14 legs in this group. Since each person has 2 legs, the number of people is 14 divided by 2, which equals 7 people.

- There are 6 heads in this group. This means there are 6 individuals in total, as every person has one head. We already know there are 7 people, so this number does not match.

- There are 12 ears in this group. Each person has 2 ears, so the number of people should be 12 divided by 2, which equals 6 people. Again, this number does not match the previous calculation.

From these calculations, we see that the given information is inconsistent. There is no way to determine exactly who could be in this group based on the provided information.

Now, let's consider what would happen if the dog ran away:

- If the dog ran away, we would lose 4 legs (since dogs have 4 legs).

- This means there would now be 10 legs in the group (14 legs - 4 legs).

- Since each person has 2 legs, the number of people would be 10 divided by 2, which equals 5 people.

- As for the other animals mentioned (4 gerbils, 1 duck, and a man with 10 arms), they are not accounted for in the given information, so it is unclear how they would change.

In conclusion, the figures would change to 5 people if the dog ran away, but the impact on the other mentioned animals cannot be determined based on the given information.