Correct. I saw a dachsund try to mount a border collie in Central Park some time ago.
One of the more impressive feats of dachsund-dom, was a male dachshund who managed to impregnate a full sized female German shepherd.
This utterly mystified the owners until they saw the dachshund chasing the shepherd around the yard, nipping at her back heels, until she lay down to protect them with her front legs. Bam.
I was reminded of the old joke about a circus dwarf who was accused of raping the circus fat woman. When the judge asked her how in the world, she said he used a bucket.
The judge said it was ridiculous, that she could have kicked the bucket out from underneath him any time she wanted, so found the dwarf not guilty.
However, looking at the grinning dwarf, the judge had his suspicions. So he told him about double jeopardy and that he was safe from prosecution, but the judge still suspected the dwarf had done it, so he asked him how.
“I used the bucket, just like she said, your honor. But I didn’t stand on it. I put it over her head and hung on to the handle!”