system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:I have heard that dolphins have the same intelligence level of a 2 year old human. What does this actually mean?
gpt
Dolphins are known to be intelligent, social creatures. It's a little unfair to compare the intelligence of a 2 year old human to that of a dolphin. However, this statement is made in light of the following reasons:

1. Like two year old humans, dolphins are known to have the capacity to use tools. What this means is that they use sponges and other things they find for fishing and hunting.

2. Dolphins are known to be able to make "sounds". They have a signature whistle, but can imitate the whistle of other dolphins. Researchers believe these signature whistles act like names and can be used to call another dolphin of the same family. This is much like young children do.

3. Dolphins are extremely social and known to "play" and interact in groups. Research suggests that they are also sentient and conscious  beings because they exhibit sentient behaviour. For example, when one male from a group of males is mating with a female, the rest of the males from the group protect them and make sure they aren't disturbed.