MC-55318Strength doesn't affect any mobs except for players.
I tested it by giving a angry wolf and a zombie strength 100 with this command (not in a command block, but also that doesn't work) /effect @e[type=!Player]
5 10 100
2014-05-17, 02:10 AM
2020-06-18, 01:41 AM
2014-05-17, 02:22 AM
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