My friend has an extremely cute, friendly male dachshund. She’s had him for 3 years and he’s affectionate with visitors etc. She has her sister visiting from overseas and today (day 4 of sister’s trip) the dachshund suddenly went for the sister and bit her quite badly.
Any ideas why? I was wondering if maybe my friend smell similar but not quite the same which confused the dog? However I know jackshit which is why I’m asking here.
Thanks in advance.