I think it was a play on the misspelled word "angle" (like acute, right or obtuse angle...)
That cat is awesome. I'm sure the dog's owner is claiming victim - his little angel never hurts anyone, blah blah blah...
Way too many a-hole dog owners out there. Cats don't have owners.
Definitely true about mama cats - very protective. Both I've had have proven fiercely protective of me, even against other cats more than twice their size. They get respect.