The type of iv catheter that is placed only for short-term use (a few minutes) and whose sharp needle may go through the vein if the animal is very active, is the catheter.

The Butterfly Catheter

Explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).