Answer: it is not a run-on sentence.
Explanation:
The above sentence has two independent clauses which are joined together with a conjunction. 
 
        
             
        
        
        
Answer:
yep! your right, it's 'The snake is interrupted and unsuccessful in his attacks on both the cat and the magician.'
Explanation:
 
        
             
        
        
        
Answer:
name it as the source of information.
Explanation: