Low blood calcium, called hypocalcemia, commonly occurs in iguanas that don't get enough calcium in their food; the condition is common, however, since iguanas are notoriously finicky vegetarians. Symptoms include acute tremors, usually noticed by the owner, and soft bones, most often detected by a veterinarian during an exam. Acute cases generally respond well to treatment, but chronic cases often need months of intense management that may not be successful, writes veterinarian Jeff Kahler.

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