1. Paracitism and Herbivory
Animals eat plants as primary consumers
The cows benefit and the grass suffers harm
One organism benefits and the other one suffers
The body louse gets food protection, warmth and the human suffers with itchy bites blood loss and feeling lousy!

2. competition
Two species compete for the same resources. Both organisms suffer.
Hyena and lions both compete for the wildebeast

3. Mutualism Both organisms benefit
The zebra gets ticks eaten off it skin and the Oxpecker gets a free ride and dinner!

4. Commensalism One organism benefits whilst the other is not effected
The cattle churn up the mud and the egret benefits because it uncovers insects which it can eat.

5. Amensalism
One organism suffers harm and the other organism is not affected
Water birds trample and kill vegetation around the ponds edge