Short answer
Watch for drooling, vomiting, or diarrhea, which can start within a few hours. These signs are usually due to the acidic juice and peel oils irritating the stomach. Most cases are mild and resolve on their own within a day. Offer plain water, keep an eye on your dog, and contact your vet if the vomiting is persistent or severe.
Lime — Food safety facts
Feed with care · Dogs · full breakdown on the linked food page
Same as lemon — acidic, and the peel oils cause drooling, vomiting and diarrhoea.
The full verdict, portion guidance and serving notes are collected on the Lime food facts page.