1. **Stiff Body Language**: Dogs that are playing aggressively may have a stiff posture, with their ears pinned back and tail held high and rigid. This is a sign of tension rather than relaxation.
2. **Growling and Snarling**: While growling can be a part of play, if it is deep, low, and accompanied by showing teeth or snarling, it could indicate aggression rather than fun.
3. **Barking**: Excessive barking, especially if it sounds harsh or aggressive, may signal that the play is becoming too intense.
4. **Chasing with Intent**: If one dog is persistently chasing another with a focused, tense demeanor, it may not be playful. Look for signs of fear or avoidance in the chased dog.
5. **Biting or Nipping**: If the play involves hard biting or nipping that leaves marks or causes yelping, it’s a sign that the play has crossed the line into aggression.
6. **Body Slamming or Pouncing**: Dogs that are overly aggressive may body slam or pounce on each other in a way that seems more like a fight than playful wrestling.
7. **Lack of Play Signals**: In normal play, dogs will take turns and show play bows (front legs stretched forward while the back end is up). If one dog is not reciprocating these signals, it may indicate that the play is not mutual and could be aggressive.
If you observe these signs during dog play, it's important to intervene calmly and separate the dogs to prevent escalation. Always supervise playtime, especially with unfamiliar dogs, and consider socializing your dog in a controlled environment with a trainer if aggression is a concern.
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