In which Star Trek novel did Kirk step on a venomous creature? The creature may be known as a "Judas Boot"?
The novel is Double, Double by Michael Jan Friedman.
On a routine exploratory mission, the Starship USS Hood picks up a distress signal from a research expedition thought lost long ago – the expedition of Dr. Roger Korby, one of the centuries' greatest scientific minds. Korby himself is dead, it seems, but his colleagues have made a most incredible discovery – a discovery they insist the Hood's captain see for himself. Reluctantly, the captain agrees to beam down…
The creature is called a 'Malachi's Boot' not a Judas Boot.