Your dog has no way to tell you her throat feels funny, nor does she have much recourse other than to try drinking it away. Diarrhea and vomiting can deplete your dog's fluids, making her excessively thirsty. If you suspect an allergy or intolerance, your vet can design an exclusion diet to figure things out. Considerations
Lettuce spread to the Greeks and Romans, the latter of whom gave it the name  lactuca , from which the English lettuce is ultimately derived.By 50 AD, multiple types were described, and lettuce appeared often in medieval writings, including several herbals.ettuce's native range spreads from the Mediterranean to Siberia, although it has been transported to almost all areas of the world. Plants generally have a height and spread of 6 to 12 inches (15 to 30 cm). The leaves are colorful, mainly in the green and red color spectrums, with some variegated varieties.
Historically, leaf and romaine lettuce have receive higher prices than iceberg and other head varieties. In 2004 head lettuce price was $15.53 per cwt and leaf and romaine varieties were valued at $17.65 per cwt.Imports Although the United States is a net exporter of lettuce, total lettuce imports into the United States have increased from $9.4 million in 1989 to $37.3 million in 2004.anada has been the leading recipient of U.S. lettuce since at least 1989 and exports have continued to increase. Canada received 82 percent ($224.9 million) of total U.S. lettuce exports in 2004 compared to 74 percent in 1989.