The news sources form of the speech might not have the speech entirely, meaning that the clips they do have could be easily taken out of context.
A personal reading of the transcript has the full speech, and it can be interpreted fully without anything being taken out of context.
Because the tongue is pinkish and sometimes it is an animal because it possesses the bad or wildness of an animal.
Threateningly
We can tell that because the dogs are huddled together in fear, there's some sort of danger. Also the snarling suggests they are under caution or going on defense from some danger; they feel threatened.
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