Fill the gaps in these sentences using adjectives from B in the vocabulary section to describe gentle or aggressive behaviour, or the relationship between animals and humans.

1. Sheep are generally rather animals, but the other day a ram attacked our dog.
2. Lions can look very with their huge teeth and large heads.
3. Horses were probably first many thousands of years ago.
4. Some dolphins are very and will swim along with human beings.
5. I don’t think birds should ever be hunted. They should be left in peace in their natural surroundings.