There are dog and cat blood banks around the US and in the UK as well. Pet owners volunteer their pets for donation and the pets are given treats and cuddles during the process. Its a positive experience for the animals, so much so that many of them donate regularly.
It appears that the 126 year old cold case of Jack the Ripper has been solved by DNA testing. A shawl that was alleged to have been found next to Catherine Eddowes, one of the Ripper's victims, carries mitochondrial DNA profiles from both Eddowes' line and the familial line of one of the Ripper suspects. Polish immigrant Aaron Kosminski, who subsequently spent his later years in mental asylums, lived in the area of the killings, and was a suspect, left his DNA behind on a bloody shawl. That shawl turned out to be a time capsule for justice.
I came across this brief article in a back issue of Fantastic Adventures magazine (August, 1940).
The source isn't the most credible. (I don't think Fantastic Adventures peer-reviewed its articles.) But the story made me curious enough to do a google search to try to figure out where this drug 'anhalonidin' came from. A lot of the search results discuss it in connection with the cactus lophophora, from which comes the drug peyote. That kinda makes sense, I guess. Though I'm not sure if lophophora grows all the way down in Colombia.