When to neuter. A male dog can be neutered any time after eight weeks of age. A few years ago, most veterinarians advised waiting until puberty hit at about six months, and some still make that recommendation. Talk to your veterinarian about whatâs best for your dog.
The phylum Cycadophyta contains about 140 living species of plants called cycads, with more species present in the fossil record. Cycads have seeds and water-conducting vessels. Cycads belong to a larger group of plants called gymnosperms, which bear seeds in cone-like structures.
Ciliophora is the name for a phylum of protists commonly called the ciliates. Ciliates are the most complex of cells, having an elaborate cytoskeleton, cilia and two different kinds of nuclei. Freeâliving ciliates can be found in almost any habitat that has water â in soils, hot springs and Antarctic sea ice.