@ Barbara , how about: walking by putting one foot before the other.
BTW it's also a very popular exercise administered by the cops in a sobriety test.

Ich hab noch "straight-line test" gefunden, habe aber keine Ahnung, ob das verbreitet ist

not just walking a straight line
heel-to-toe walking for tandem gait
http://medlib.med.utah.edu/neurologicexam/htm...

@ Marianne: OT. Would you translate 'weicher Gang' (of a cat) to 'supple gait' or 'pliant gait' ? - Thank you !

I've heard this too and it closely matches the German

@ Jack
it would have to be "tightrope" as one word
If you look at the link I gave above for testing tandem gait, the voiceover asks the person to walk "like walking a tightrope".
AFAIK the test isn't usually called the "tightrope walk" although it might be given in brackets as a description e.g. "difficulty walking in tandem ("tightrope walk")"

@Daddy
<OT>
not "pliant"
for a cat you could use "supple gait";
for a horse perhaps "smooth gait" or "supple gait" - but that's more Helmi's department :-)
<end OT>

Hi Marianne, thanks for mentioning that. Yes, a horse's gaits would be called "smooth" as in "a smooth trot."