Playing:
* Loose body language: Guinea pigs will often have relaxed bodies, ears back, and be playful and bouncy.
* Short, playful nips: They might nibble on each other, but these nips will be gentle and brief.
* Vocalization: Guinea pigs might squeak or chirp playfully.
* Mutual engagement: Both guinea pigs will be actively participating in the interaction.
* Frequent breaks: Playful interactions often have breaks, with the guinea pigs grooming each other or taking a rest.
Fighting:
* Tense body language: Guinea pigs will often be tense, with their ears forward and their bodies stiff.
* Hard, aggressive bites: Fighting involves hard, painful bites that can draw blood.
* Vocalization: Guinea pigs will often squeal or scream loudly during a fight.
* One-sided aggression: One guinea pig might be clearly dominant and attack the other.
* No breaks: Fights usually continue until one guinea pig submits.
If you are unsure:
* Separate the guinea pigs: If you are unsure whether they are playing or fighting, separate them immediately to prevent any injuries.
* Observe closely: Watch their behavior for signs of aggression like teeth baring, growling, or chasing.
Important Note: Guinea pigs are social animals and need companionship. It is important to provide them with a safe and comfortable environment, and to monitor their interactions closely. If you are concerned about their behavior, consult with a veterinarian or experienced guinea pig owner.