Mark 5:11

On the side of a [nearby] mountain, a large herd of [wild] hogs was grazing.

Matthew 8:30

Now a large herd of [wild] hogs [i.e., about of them. See Mark 5:13] was grazing some distance away from them.

Luke 8:32

Now a herd of many [wild?] hogs was grazing on a [nearby] mountain, so the evil spirits begged Jesus to give them permission to enter [the bodies of] the hogs. So, He gave them permission [to do it].

Treasury of Scripture Knowledge

Summary

Now there was there nigh unto the mountains a great herd of swine feeding.

General references

Bible References

Herd

Matthew 8:30
Now a large herd of [wild] hogs [i.e., about of them. See Mark 5:13] was grazing some distance away from them.
Luke 8:32
Now a herd of many [wild?] hogs was grazing on a [nearby] mountain, so the evil spirits begged Jesus to give them permission to enter [the bodies of] the hogs. So, He gave them permission [to do it].

General references

Acts 19:15
[On one occasion] the evil spirit replied, "I know Jesus and I know Paul, but who are you?"