Almost forty percent of all foxes killed during fox hunting are by terrier work. Apart from the pain of injuries from fighting underground, sometimes a dog entered may encounter a wild animal with its back to it, and therefore that dog will rip at the backside of the wild creature.
This cruelty can last for several hours, and there are accounts of foxes having parts of their back passage and abdomen ripped out while in this position.
There are also numerous references to foxes having their faces ripped off by the dog underground. We also have numerous evidence of dogs staying underground for a very long time to polish off (eat) so to speak the animal that they have killed underground. There have been stories told where the dog has eaten his fill and is too fat to escape up the tubes from where it came. So much for the often repeated lie that a fox either escapes or is almost instantly killed during foxhunting.