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|Barking tree frog|
Hyla gratiosa is the largest native tree frog in the United States. It is 5 to 7 cm (2.0 to 2.8 in) in head-body length. It is variable in color, but easily recognizable due to the characteristic dark, round markings on its dorsum. Individuals may be bright or dull green, brown, yellowish, or gray in color. It has prominent, round toe pads, and the male has a large vocal sac.
The barking tree frog is known for its loud, strident, barking call. It may also utter a repetitive single-syllable mating call. It has been known to chorus with other frogs of the same and similar species. Furthermore, during mating, a female H.gratiosa is more likely to pick an attractive mating call unless if it is more than five meters away. 
The barking tree frog burrows in the sand, especially when the temperature is hot. It also spends time high up in trees, especially during the day when it is less active.
- Hammerson, G. 2004. Hyla gratiosa. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. Downloaded on 04 June 2013.
- Murphy, Christopher G. (2012). "Simultaneous mate-sampling by female barking treefrogs (Hyla gratiosa)". Behavioral Ecology. 23 (6): 1162–1169. doi: 10.1093/beheco/ars093.
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