For the most part Urine is what our biological bodies do to expel the toxins created within our bodies. Chemical composition would dictate if I were to pee repeatedly in the same spot after a while there would be an area that will be visibly altered. And it wouldn't take all that very long. Urine has a high ammonia content.
Because you have a lot of chemicals in your urine.
No it won't.
yes. be careful it could hurt your weave.
only if you freeze it and stab them.
Urine, whether a male or female dog, or human for that matter, will tend to kill grass, yes.
Yes, the acid from the cat urine will kill grass.
Grass turns brown after a dog urines on it because there is acid in its urine. What if they crap?
Yes
No, it shouldn't. My horses eat it all the time. It is just grass, it will not hurt them at all.
No but there are many plants in the grass that can.
No, it is harmless to grass seed.
only the grass knows