Dog's bark protects cat from fox.

[Baitball Blogger]

http://www.youtube.com/watch?feature=endscreen&NR=1&v=bvilNcOyd30

[Enrique]

1. good thing

because the people weren't going to do anything.

[Baitball Blogger]

3. That fox did not look healthy. Unlike this one:

[Lady Freedom Returns]

2. It is interesting that the cat ran in the direction of the dog.

Animals will tag team when it is a common enemy.

[Baitball Blogger]

4. I've seen that in the wild.

The rabbits come out to feed when the squirrels are out, because the squirrels screech when they see danger.

[Lasher]

5. The cat was probably not in any danger from the fox.

On more than one occasion I have watched my cat interact closely with foxes, almost touching noses. They display curious interest in one another, but I have never seen any indication of fear or aggression - from either cat or fox.

Grown adult cats should be safe but kittens are probably another story.

[Baitball Blogger]

6. Is it possible that animals can sense when another animal is desperate and hungry?

[Lasher]

7. I'm sure animals can often tell if others are in distress.

But I wouldn't go so far as to say that is always the case. If there is something wrong with a fox, such as rabies, then of course all bets are off. Here is what the humane society has to say:

By and large, foxes seem to pay little heed to adult cats, recognizing that they’re dealing with an animal often almost their same size, with a well-deserved reputation for self-defense. Smaller adult cats and kittens, however, could be easy prey for a fox. So may dog toy breeds.

http://www.humanesociety.org/animals/foxes/tips/solving_problems_with_foxes.html#Do_foxes_eat_pets

[Baitball Blogger]

8. This cat certainly managed to thwart a fox.