And SO2 causes acid rain.
Krakatoa emitted enough particulate matter into the atmosphere that the world experienced colorful sunsets for several years. Climate change is occurring but the actions of SUVs (Super Upheaval Volcanos) is not the cause. That's my point.
While volcanoes are truly immense sources of ash (and a big eruption as you noted can put it into the upper atmosphere, where it can affect climate for several years), the only gas that they are significant sources of, compared to anthropogenic sources, is SO2. And "belching cattle and farting spiders" implies methane, which volcanoes emit in tiny amounts, if any. So I just wanted to clarify what gases were "active" in this regard.