The noun A. TESTUDINEUS has 1 sense: 1. a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land. Familiarity information: A. TESTUDINEUS used as a noun is very rare. Dictionary entry details.
If the urine appears thick or has granules in it I'd suspect bladder stones/crystals or infection. The bright yellow color can sometimes indicate a liver or gallbladder problem.
Straining and red urine can indicate bladder infection, bladder stones, cystitis, trauma, kidney problems, toxin ingestion and some types of anemia. If there is not a normal amount of urine being produced or the straining continues I would have the dog examined today if possible.