As well as the common symptoms of post-polio syndrome, several associated symptoms can arise from the combination of fatigue, muscle weakness, and muscle and joint pain.
Squirrel monkeys are any of the species of monkeys that belong to the taxonomic genus Saimiri. The species and subspecies are distinguished mostly from fur coloring and shape, rather then behavior differences. They live in Central and South America and have similar habitats even though the range is very widespread.
Monkeys are haplorhine (dry-nosed) primates, a group generally possessing tails and consisting of about 260 known living species. There are two distinct lineages of monkeys: New World Monkeys and catarrhines. Apes emerged within the catarrhines with the Old World monkeys as a sister group, so cladistically they are monkeys as well. However, traditionally apes are not considered monkeys, rendering this grouping paraphyletic.