My yorkie acts something like that. She just does not appreciate being "touched" when she's sleeping! Not in every situation though. But her lounges and snarley sounds are so harmless....she just makes noise really! But if she isn't expecting to get touched and she is surprised, she will do that! We tell her "be nice" but I'm not too worried about it since she doesn't really hurt us or her sister...she just sounds tough! LOL
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God Bless our troops

R.I.P. Sweet Lexxi Girl - you were taken too soon, we love you always
Vixxen ,
Truffles ,
Gemma Lexxi and their mommy Trina- Girls Rule!