The cactus plant can hurt a human with sharp thorns, spines, quills or needles. It also can hurt a human with its stored water. That water may be toxic to drink.
What kind of "cow" are you referring to? Is this a young calf or an older cow? Cows refer to mature female bovines. And your "cow" may be ill; not eating is a common symptom of a bovine that is sick.
yes, in fact it can in some cases be deadly some dog food is made of cow, foods with cow brain are dangerous because of "mad cow disease" this effects the brain and is fatal.
mad cow? time to call a vet? if this is a fun question, then good luck finding a farmer if this is a REAL question, call the vet asap.
The cow would get sick.
Well... I personally think that cactus finches eat cactuses because in some images on the web, if you type in cactus finches, some will have a picture of a cactus finch eating bits of a cactus.
You can get sick from eating too much of anything.
Yes, you could get sick from eating green salami.
Can you get sick eating old brown rice
There is no difference.
That depends on what the cow has been eating or ate.
yeah you can get sick from eating too much of ANYTHING.
You can get sick from eating too much of anything!