Pull it out.
use Mr. Clean and a toilet scrubber.
What is the recommended air change for a toilet?
Yes, all toilet paper is biodegradable.
Because it is disgusting.
Mainline stoppage.
There is a blockage in your main sewerline.
Your drain line is plugged somewhere after your shower and toilet line are connected. The reason for the gurgle in your toilet is because air is trapped in the drain and your toilet is the closest place for air to flow to. If you had a vent on your toilet trap arm then it would gurgle in the vent rather in your toilet but your drain is still plugged and needs to be snaked out and maybe your drain line needs to be examined for right grade or broken.
A mainline stoppage.
Gurgle is a noun (a gurgle) and a verb (to gurgle).
The drain is plugged somewhat between the upstairs and downstairs. Need to snake the drains.
The toilet will gurgle as it sucks air through out the toilet trap. You may even hear it suck air through a nearby sink or the tub. Sometimes it may just drain slow or weak.
Probably because the line is still at least partially clogged.
Drain is partially clogged or the vent pipe is stopped up. Also check the vent holes underneath the rim of the toilet and clean them out.
The water in the stream began to gurgle as it flowed over the rocks.
Many people have Gurgle.
Your toilet will gurgle and bubble when flushed due the flapper valve on your toilet, or small vent pipe and even because of a crack in the toilet. To overcome this plumbing issue try changing the toilet flapper, which does not cost much, and if the issue is a major one contact a professional plumber near at once.