Table 3. Ethogram for bottlenose dolphins in this study.

Behavior	Definition
Aggression	based on29
Chasing	One dolphin pursues another dolphin faster than usual
Hitting	One dolphin makes contact with another dolphin with great force using tail, peduncle, or head
Biting	One dolphin makes contact with another dolphin with great force using teeth
Affiliation
Contact swimming	One dolphin touches another dolphin with its pectoral fin and both dolphins do not rub the touching part (based on46)
Flipper-rubbing	One dolphin touches another dolphin with its pectoral fin and one or both dolphins move the body to rub the touching part (based on45)
Synchronous breathing	Two dolphins swim in parallel at close proximity (<0.6 m) and mostly synchronize their breath (<2 s) and swimming speed (based on47)