Yes to the suggestions to get her checked and also spay her.
Aggression may not necessarily be vicious but rather reaction to the scary situation she encountered. It can be dealt with through consistent and regular training (with treats to start) - you might try the Fenzi Dog Academy online classes (they have a great class for retraining reactive dogs). But regardless you need to be more aware of her surroundings and not put her in a situation that may be scary to her or at least get her attention back on you (treats) when you can't avoid the situation.
New at the Basenji Forums
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Hi!
I am new here and just thought I'd introduce myself. My name is Camilla and I live i a small town called Sala in the middle of Sweden. I breed basenjis in a small scale and have two bitches at home. Kassi (Yulara Kassia) and Ive (Miss Amazing's High Five). My kennelname is Miss Amazing's.
Best Regards,
Camilla -
Welcome Camilla. I have seen your website and your dogs are beautiful - especially Yulara Kassia
You will make lots of friends and get loads of help and advice here. -
Hello Camilla,
welcome to the forum. -
Welcome to the forum Camilla!
I'm Tillo's (Elegant Elephant Mirtillo) 'mom' 
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Hi Camilla, glad you found our little community!
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Welcome to the forums!
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Hi Camilla welcome to the forum:D
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Hi from Czech Republic and welcome to the forum :D.
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Welcome! Post pictures!
We love pictures. -
Welcome to the forum to you Kassi and Ive.
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I have posted some pictures of Ive and I will post some of Kassi later on.
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Welcome to the forum Camilla - you have some lovely dogs.:)
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Camilla, welcome onboard, V?lkommen..I love your website, have looked at it lots.
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Welcome… Im still new myself. Rachel, Adam, and Kenji (hes the
say Hi.
